Check if input is empty angular. Such events are also called synthetic events.

value. You can solve this problem in two ways. Although params provided in above example are because ngOnChanges() method receives a SimpleChanges object of current and previous property values to utilize further. 3. badInput; } Edit: Credits to @osullic for find this in spec: Sep 25, 2015 · My goal is to hide/disable the submit button, which is located all the way down, whenever one single input field in the list in either sets of data is empty. preventing user from entering blank post in form javascript/angular. I want to call some code whenever I type into the field. Maybe it will help somebody. Lets say this is the input field - Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Sep 18, 2015 · Learn how to validate an input field before submitting a form using JavaScript. 0. one_attribute" /> When I initialize my controller, I have this Jul 6, 2021 · Here is my code. Viewed 6k times 1 My code is the following May 9, 2015 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Mar 21, 2016 · You can use angular's function called angular. How to compose such validators to meet my scenario? Mar 18, 2016 · Angular - Checking if a field is empty. Jan 9, 2013 · Check multiple input empty value wont work. This will ensure the user does not see the &nbsp; . this Apr 10, 2019 · You can validate your data as soon as any value changes in the form, no need to wait for the submit to happen. Basically, I wanted to: 1. log(this) does not show it) } Does not matter whether you pass it in as well. ng new appname. 20. A common bug when juggling is: "false" == false a non-empty string like "false" evaluates to true. Disable Submit Button if the Input Field is Empty in a Reactive Form. The goal is to display a modal popup, and the contents of that popup change depending on whether the form is simply "empty" vs. inavlid / required / dirty / pristine (name of the validators and other form related things) Jul 6, 2022 · How to check if input box is empty in angular? You’d probably need something like a function checkme () in your TS file that is called when your submit button is called, <button (click)=”checkme ()”>Submit</button> that checks: or something. It will look like the following: Example 1: In this example, we will use a function that will check the length of the password. form) on form submit. Feb 9, 2015 · The BusinessCtrl is initialised before the createBusinessForm's FormController. "can we make this type a boolean"). controls. Jul 28, 2020 · @Input() is basically a decorator to bind a property as an input. A reactive style of programming is enabled by Angular reactive forms that supports detailed management of the data flowing between a non-UI data model (typically retrieved from a server) and a UI-oriented form model that contains the states and values of the HTML controls on the screen. This is a string but (in your case) it should be valid. 0. Jan 31, 2018 · The submit button should be disabled if there is an input fields is empty or invalid. In order to trigger and upload of a file you have to use a multipart request which is different from a simple AJAX JSON request. If the form is empty I will simply reset the form. Aug 30, 2016 · Just a note that following import statements will be needed: import { Directive, HostListener, Input, Optional } from '@angular/core'; import { FormControlDirective, FormControlName } from '@angular/forms'; Aug 14, 2014 · Thanks for the answer. How to Check for Empty or Null Strings. Even if you have the ngController on the form won't work the way you wanted. In console prompt run the following command in order to get the invalid Angular controls that bear the CSS class 'ng-invalid' How to check for an empty object in an AngularJS view. Mar 10, 2022 · Here you can see the mocked model input (that I receive from server API in the real app) is null at first, but after I edit the value in textbox and clear it, it becomes empty string. firstName. This page shows how to validate user input from the UI and display useful validation messages, in both reactive and template-driven forms. errors. If you are using Angular’s reactive forms, then you don’t have to explicitly check if the input is empty or not and then set the disabled property. Ask Question Asked 9 years, 8 months ago. Feb 4, 2016 · Angularjs : check if input is empty with ng-form. For compatibility with Template-driven and Reactive Forms, we need to dispatch a fake input event. Ask Question Asked 9 years, 5 months ago. May I suggest using angular-ui boostrap datepicker? Plunker example - Angular-UI Bootstrap docs Dec 21, 2015 · We have to use "ngOnChanges()" when an input/output binding value changes, so to catch incoming value from @Input binding use above method. Set Angular input value to empty if value equals zero? 0. Dec 3, 2018 · I've got an angular component for an input with a floating label. I've tried using the model ng-hide="!email. ng-invalid. Template type checking helps you catch and fix errors in your templates at compile time, using the TypeScript compiler. Aug 6, 2021 · I have an Angular reactive form with 5 controls. Along with that, I have a reset button. Basically, if there's no value, but the browser says there's a bad input, then it's not empty. value !== '' && email. Whenever a FormControl's value changes, Angular generates a list of validation errors by running validation. component. length" if that reads more naturally for you. I am trying to check if the file input element is empty when submitting the form with jQuery/JavaScript. /check-date. validity. It has the same functionality as ngIf (then, else and 'as' syntax is supported). May 20, 2016 · Obviously, onkeyup takes care of keyboard input only. Sep 18, 2018 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Oct 31, 2019 · The webpage discusses how to change the border color of an input field to red when it is invalid. Under DevTools in Chrome, select Console tab. value} /> (you can access all the values through the base formgroup which you have set on the form using <form [formGroup]="_formName")and you have acces to all the other attributes like _formName. It is used to pass data i. Modified 2 years, 3 months ago. Question Is there any way to check if the reactive form is blank or it has any value. invalid" Share Jun 27, 2018 · How can I disable the button if the input is empty, and enable it when the user start typing in the input, i tried that: <input #new_field type="text" autocomplete="off" /&gt; &lt;p-button (onC It's the whole input element so if you'd like to check if it has it's own value, you need to change your html as follows: Check if a form is empty in AngularJS. Performance. Nov 23, 2020 · You should use reactive forms for dynamically created forms. May 6, 2019 · Here is the PROPER best solution for this. If the consumer of the component adds the area for the "read more" text, I want to show the "read more" li Jul 19, 2021 · How to check if string array only contains empty strings 0 typescript: how to check if an array does not contains a value from another array and return the missing value? Dec 9, 2014 · And if you think logically it actually makes sense, item. length" instead of ng-show="!somefield. That can be fixed by adding code that changes hasContent inside ngOnChanges. Jul 12, 2019 · Angular 2: Check if input in reactive form is empty, enter default value if no input given. required true, if your value doesnt match with pattern then min. ng-touched { border: 1px solid red; } Apr 19, 2012 · I need to check to see if a variable is null or has all empty spaces or is just blank (""). Note that this will probably not work if your content is dynamic and changes from empty to non-empty (or the other way) after the component was already loaded. js. I tried like this: <md-input-container> <input mdInput [(ngModel)]="question. May 18, 2016 · Natively you can't, because file uploading are more complex than that. 1. Define a template reference variable on the input element with #myInput property Nov 30, 2018 · The problem arose when I implemented a dedicated form field component which accepts FormControl and has not only input but also validation errors. When i filled the first input field, the button become enabled (while the other input fields are still empty or AngularJS monitors the state of the form and input fields (input, textarea, select), and lets you notify the user about the current state. will give you the string ‘placeholder’ if the input box is empty (TitleText is null). Jun 24, 2016 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Note: I used Angular 1. required and display an asterisk? Oct 5, 2017 · You don't add them to your module. I tried this: ng-show="angular. Oct 1, 2013 · Since document. Modified 5 years, And if you want to check if the value has changed, you don't AngularJS monitors the state of the form and input fields (input, textarea, select), and lets you notify the user about the current state. You can check this example on Stackblitz. Solutions works slightly different (for corner-case input data) which was presented in the snippet below. value" ng-class="{red: question. Checking if an object is null or undefined in angular 2. equals({}, card)" and. But In your case I think you just want to check the checked property of a single checkbox then the easy way of doing that is to use template variable and access that in your ts file using View Child. Angularjs check and compare two input field values. When the DOM element value is changed, Angular automatically updates this property with the changed value. Such events are also called synthetic events. i would like to show you angular check if string is empty or null. ng-if - checking for null value. It would only need to be done on load of the page. Share Apr 18, 2015 · Check if input field is empty in the angularjs script. <input type="text" placeholder={{searchText}}> How can I check if searchText is empty and render something else while it is empty? You can improve overall data quality by validating user input for accuracy and completeness. Set Angular input value to empty if value equals zero? 1. Aug 25, 2022 · You can use the below method! listen to change event of the form fields you want,then check if the field is filled, then we can toggle the required with the command setValidators then after its updated we can ensure the form is in sync by running the updateValueAndValidity which will revalidate the form! Sep 24, 2020 · Reactive forms are used to create forms that contain a reactive style. Code to get the name &lt;div (click)="getName( May 2, 2024 · Hi Dev, This tutorial will provide example of how to check array is empty in angular. To write a reasonable check, I would consider it best to go about it like this; Jun 4, 2018 · Is there a way to check if a string is empty inside a tag? I have this input field and it has a placeholder tag. You may read more about angular's functions here: AngularJS Functions (isUndefined) Share This check allows forms to avoid potentially expensive async validation processes (such as an HTTP request) if the more basic validation methods have already found invalid input. Modified 9 years, 8 months ago. To add a validator to the FormGroup, pass the new validator in as the second argument on creation. e. checking if multiple input values are not empty. invalid property. The button is disabled when i fill some fields and left some fields empty, except for the first input field . there is a cross-validation to reactive forms. Angularjs : check if input is empty with ng-form. value is always of type string if a value is set, you don't get false positives like 0 being treated like no input, which would be the case if the type was number. Aug 7, 2018 · When your binding is to a property of a nullable object you can protect against errors when the object is null by creating a setter and getter and binding to that property alias. username. ) this is how angularjs works. A very compact and defensive-coding-minded check to allow a user's typical numberic input (including type number and numeric strings) and exclude EVERYTHING ELSE would be to use the combination of optional chaining and a string match, like this: @akapelko it is where the type is juggled (i. JavaScript has several ways to check whether a string is empty or null. Let's explore some of them. Otherwise it will always return null May 3, 2023 · However, the value will be null if the input field is not even created. Prerequisites. Oct 23, 2020 · There are many ways to know weather a check box is checked or not you can use Reactive Form Control OR Template Driven Forms etc. equals() work as an angular expressions? Problem with ng-if to check if input field is Jun 28, 2017 · To get the value you should check form. I know we have form validation in angular but am just curious. Instead, Angular listens for an input event that the browser fires when a field value changes. If it is Jan 12, 2018 · I may be interpreting your question incorrectly, but it seems that numbers, including 0, should NOT be considered null or empty. See full list on cloudhadoop. Does angular. Feb 21, 2016 · I want to check whether the input is empty. You can provide an initial value to your reactive form. Dec 5, 2014 · Angularjs : check if input is empty with ng-form. It can also be undefined if you have multiple inputs, in my version of Angular this is the case: export class Foo { @Input() bar: string; // fine @Input() baz: string; // does not exist (console. Using the if Statement and typeof Operator. I'm trying few simple things. Dec 3, 2020 · Using template reference variable we can set ngModel on input element, The we can pass template references to onValueChange method to check whether input is dirty or not. no-item:not(:first-child) { display:none; } Simply wrap the list with any tag (section, div, ul, ) and add a last item with the message you want to display and add the class above. Make sure that the conditional after [disabled] is invalid (invalid being true), that way, Angular is essentially saying that if that particular input has an invalid entry, then the button is disabled until the entry is valid. Learn AngularJS Checkbox/Radio Custom Select Toggle Switch Check Checkbox Detect Caps Lock Trigger Button on input field (fname) is empty, this function Jan 31, 2016 · This solution has worked for me (on angular version 12. I have a date picker where it shows a certain date for a property in my app. Jun 23, 2017 · I have an input field and I want to change the color to red, if something is filled in. Making and Angular form invalid when inputs aren't required. Reactive forms provide a model-driven approach to handling form inputs whose values change over time. check if value is an object and has one property called shop_name Aug 21, 2023 · Under the hood, Angular has provided directives to match these attributes with the validator functions defined in the Angular framework. Feb 24, 2012 · jquery check if input text empty is not working. You can simply pass additional condition into the ngIf directive to check if the current value of the input is empty string. invalid. I have gone through a bunch of solutions and nothing is working for me. op == ""); // execute block of code when click on cancle or ok whthout <inputformControlName="username"[ngClass]="{'has-value': !!_formName. You can improve overall data quality by validating user input for accuracy and completeness. 6 (High Sierra) for 18 chosen solutions. Sep 15, 2015 · In the view I must check if my object is still an empty literal, {}, or if it contains some data in some fields. I realize I could use a setter in the component, but wondering if there is something that could be put on the input itself. One way to check for an empty or null string is to use the if statement and the typeof Apr 1, 2016 · By keeping above in mind we can easily check, whether variable is empty, null, 0 or undefined in Angular js. This should also preferably work on Internet Explorer 9, where the 'required' tag is not supported. If the checkbox is set, it will require the myEmailField not to be empty. Take a look at this example. I tried (oninput) and (onchange), but they do not run. May 29, 2019 · Delete this. Apr 14, 2021 · An invalid Angular control has the CSS class named 'ng-invalid'. in my CSS: input. But it's still empty as required validate detects as it's empty. Sep 28, 2017 · Another option would be to use a custom directive that can be placed on every <input type="text"> element that reads its value and a default value and sets the default value to the element whenever the field becomes empty. Brand new to JS. Are there any better ways? How do you check if an object is empty or if it contains some fields? May 10, 2016 · I am now calling controller methods when this inputfield is changing : &lt;input type="text" ng-model="query" ng-model-options='{ debounce: 500 }' ng-change Jun 26, 2019 · I have a component whose template allows for 2 content areas: Text and "read more" text. Shorter way to check that value of multiple input is empty for jquery. Check whether input field is empty in Controller - AngularJS. Jul 17, 2013 · If input field is empty, disable submit button. Viewed 128k times Check demo Fiddle. Ask Question Asked 5 years, 11 months ago. Jan 31, 2019 · You can try it with a combination of that and the form reference where you can check if the form state. I toggle a boolean variable for setting the class on the input wrapper to make the floating animation for the label with angular (blur) and (focus) on the input element. 13. Check if Variable is Empty Im trying to disable a button on a condition whether an object is empty or not. Dec 17, 2020 · check if input is empty css; c# check if textbox is not empty; jquery check if input is empty on submit; check textbox is empty in jquery; How to check if input file is empty in jQuery; jquery if input has empty white space; empty the value of an input in jquery; if acf field is not empty; hhow to check input is null in html using js; css <input type=number> We can ask the browser for more information and thankfully ValidityState is extremely well supported. It seems that earlier versions of Angular do not allow this. But looks like i'm doing it wrong. Now for people who are trying to check if the value of input is empty or not in Angular 6, can go by this approach. *ngIf="email. isUndefined(value) returns boolean. Dec 12, 2018 · Is it possible to know if an input is empty with only CSS? I had that question when I tried to make an autocomplete component for Learn JavaScript. This ensures that content is displayed only if there are post. javascript May 3, 2018 · With Angular Material 10 or above If you want to show a message when not data matches the You can simply use the *ngIf directive to check if dataSource is not empty. Solution 1. Ask Question Asked 8 years, you can use a for loop to check every input field and check if input ng-model has value Jul 20, 2018 · I am working on Angular 6 with Rxjs 6 while I have a question regarding returning a null/empty Observable if response failed or has exception, Here is my assumption, my remote api will return an ob Oct 5, 2022 · Learn how to validate empty input fields in JavaScript with solutions and discussions on Stack Overflow. Sep 10, 2018 · Angular 6 Reading empty input value. How are signature operations like hashing or concatenating with a message done when the input is an elliptic curve May 3, 2016 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Aug 16, 2017 · Try this, instead of changing the value of the input when it's empty, simply change the value of the data before it is handled when the form is submitted. appname, move to it using the following command. 4. Better: you can set the input type from text to number <input type="number" Then it's always a number. untouched && email. value}"> </md-input-container> Validating form input. capabilities. If the list is empty it means it is a valid status, otherwise, it is an invalid status. May 4, 2014 · This works fine once I'm typing but I want it to show no errors if the input is empty. If not empty, enable the submit button. items has a length greater than zero and ensures that the first item in the array is not an empty string. May 12, 2014 · So I was playing around earlier with the new :where and :is clauses and conceived of this bit of fun, and after finding this post with the :invalid and :placeholder-shown bits, thought I might share this possibility for future reference Aug 15, 2022 · Fake input event. After asynchronous validation begins, the form control enters a pending state. Apr 21, 2020 · AngularJS - ng-if check string empty value. If you want a fully type-safe answer for this, that allows you to tell tsc that an object is, or is not empty when narrowing a union type, you can create a type guard utility function using one of the above answers as suits your needs: Angularjs input fields empty or not validation. Angular js doest provide separate API to check variable values emptiness. If no value passed to that input variable then It will take the default value. How to detect blank input angular. value && !input. Angular 6: Set empty form array Jan 27, 2016 · checks whether post. Is there a way to check the @Input() control: FormControl for Validators. Oct 22, 2015 · Angular seems to have a different behavior when a user enters and then clears text in an input field depending if this field is required or not. You can workaround this issue by adding an event listener to your input field like this: <input ref-filter type='text' (keyup)='true' /> – You initialize the filterValue with the shop_name but you don't check if that value is empty and if is a shop value. In this case the object selectedTopics should be equal to {} register. Feb 12, 2021 · You can use min. I remember using that for form validation. Oct 24, 2018 · The most simple approach dealing with min max validations in template driven form is using pattern attribute of html and assign it a regex number for example for range 0-24 the input would be Jun 19, 2019 · This validator will check the value of the whole group, including the a checkbox. – The easiest way would be with a template reference variable (see my other answer for a way to do this with a directive):. I perform tests on macOS v10. data = [] from constructor, avoid change anything when you use dependecy injecton. I need to check if the variable which goes inside placeholder tag is empty. Here is an example to validate strings that are not empty spaces, you can change it to your needs. You could simply strip out the _/-characters when checking the length of the value: This check lets forms avoid potentially expensive async validation processes (such as an HTTP request) if the more basic validation methods have already found invalid input. topicRequestAnswer = { Jul 11, 2017 · An alternative way to avoid IF/ELSE for this scenario uses CSS only, and it works in any framework (Angular, React, Vue, ) . Hide a dropdown if the input is empty 2. Take a look at the following links: Reactive Forms Angular. AngularJS also holds information about whether they have been touched, or modified, or not. This is demo in which you can see that how to check whether textbox is null or not using Angular6 Feb 28, 2022 · Angular - Template type checkingLearn how to enable and configure template type checking for your Angular applications. errors to find errors. Aug 13, 2018 · Angularjs : check if input is empty with ng-form. Try it out: Copy some text into your clipboard and then right-click on the input and click Paste. Show the dropdown if the input is filled Sep 5, 2022 · To play with the variables in view component in Angular, Check if Variable is Empty - Angular 2. It works when I add an empty space and after the value. Angular 6 Reading empty input value. It might not be what you're trying to do buy it might point you in the right direction. When the element is empty, it has a value of ___-___-____. Angular forms cannot observe value changes directly. Note: If your button status is not updated as soon as user types in the input field, this is due to Angular not triggering change detection on template variable change. Step 2: After creating your project folder i. Sep 28, 2021 · I am wondering why in reactive forms of Angular, input tags with an attribute type='number' have null as value when they are empty even though in native HTML5 we do never see them have null as value. Jul 11, 2016 · I have a html code, how can i check if the input field is empty in the script. length" but can't get it to work. Jul 10, 2019 · Group your controllers in a form group and add validators to each controller so user cannot process form's data without all required fields completed. Since some field are required it's good to let the user know if it's required by *. validator'; Angular empty input validation fails with Nov 1, 2018 · AngularJS - ng-if check string empty value. When the reset button is clicked if the form is not empty I want to show a confirm dialog. A better alternative might be to really take advantage of the form abilities of Angular: <input name="myfield" ng-model="somefield" ng-minlength="5" required>. 4 in the plunkr as you did not specify which version of Angular you are working with. And use set and get for each Input() that you want to use in your template, it's a best practice. equals({}, card)" but it didn't work. I tried to check with ng-class if question. 6. To have a better idea of how form is structured, do a console. Jul 22, 2016 · I have an input field mapped to an entity in my controller with a ngModel 2-way binding: <input type="text" [(ngModel)]="entity. I checked these articles: Documentaion: Jul 10, 2017 · So, in myForm, there are 2 fields name and email, I want to add the validation to check if the user input either one of them, it would pass the validation; if both fields are null or empty, it fails. I want the date picker to show that date only if, IsPrimerExists is true. Jul 24, 2019 · Check whether input field is empty in Controller - AngularJS. See examples and solutions from other developers. You can use standard HTML5 attributes to validate input, or you can make your own validation functions. If it's not true, I want it to be null. Also, you need to provide a value with ngValue to the option. . Angularjs input fields empty or not validation. By default the model i Sep 11, 2021 · Step 1: Install Angular CLI; Step 2: Download Angular Project; Step 3: Add Reactive Forms Module; Step 4: Custom White Space Not Allowed Validation; Step 5: Update TypeScript Template; Step 6: Update HTML Template; Step 7: Start Angular App; Install Angular CLI. Form Validation Angular Jun 11, 2019 · that is, it does not indicate at least if it is empty like a string like this: "", then when I try to ask if it is empty, it does not work for me, what does it mean that it is blank? also probe if it is undefined or null and neither. In the first step, you need to begin by adding the Angular command-line interface Jul 15, 2021 · We can add a validation on reactive form itself. Checking Input Field Empty. For anyone curious: "The difference between disabled and readonly is that read-only controls can still function and are still focusable, whereas disabled controls can not receive focus and are not submitted with the form and generally do not function as controls until they are enabled. Just for readability created library ngx-if-empty-or-has-items it will check if an object, set, map or array is not empty. html Currently I am able to detect only selection changes using onSelectionChange but it so not detects if the field is empty initially or when after having selected an item and then deleting it, I do not select anything and shift focus out of the input field. Checking Input/Type Text is empty/null with jQuery or JavaScript. Sep 12, 2023 · This check lets forms avoid potentially expensive async validation processes (such as an HTTP request) if the more basic validation methods have already found invalid input. pattern will be available. Share Mar 28, 2023 · 2. I found one similar question here: link , but the solution is not the best (i think) Thank you in advance Dec 7, 2023 · Step 1: Create an Angular application using the following command. Instead, you can directly bind the disabled property of the button with the form. firstName not form. (ANGULAR 7,8, 9) Addressing solution: To set a default value for @Input variable. Apr 23, 2014 · I need to create another validation, to check that at least one field of the form is filled. com I'm new to Angular. (this happens when angular initializes the controller) What you need to do is add an ng-change to the html and then when the model changes the function will fire again. Mar 18, 2017 · Now i have function submit where i check if user enter valid password if not that i have in else this: Set Angular input value to empty if value equals zero? 3. Example: Sep 12, 2019 · Angular 2: Check if input in reactive form is empty, enter default value if no input given. Feb 7, 2018 · I came across this AngularJS question here, Hide Value in input when it's zero in angular Js, but couldn't find anything for Angular 2+. function isInputEmpty(input) { return !input. I've an Input field. Input tag in an Angular reactive form looks below. Don't forget, however, that you can paste text into an input box using your mouse. ng-show="!angular. Dec 24, 2014 · From what it looks like in your case, I think you're expecting either an empty string, or null. I just want to detect changes. Angular ng-if for checking empty string not working. Find out how to use strict mode , full mode , and other options to improve your development experience and code quality. " The masking plugin that you're using alters the value of the input element. If you have your field as required then you will get min. If empty, disable the submit button. AngularJS check object/array is empty. 2. So an empty string is treated as a boolean false, for example. &lt;input type="pa Aug 8, 2016 · The problem is that you are only checking if the scope property is filled in once. log(this. 2). Jul 15, 2018 · Learn how to check for an empty string in typescript with different methods and examples from Stack Overflow community. Simply import them: import { checkDateMethod } from '. ts ngOnInit() { this. Feb 7, 2019 · ngModel is shown the value. Check if input field is empty in the angularjs script. Ask Question Asked 11 years, 1 month ago. photo is not an empty string (so this condition comes true) since it is undefined. Then you can check in OnSubmit function if the form data is invalid (or not) and stop the processing of the data. cd appname Project Structure. getElementById('Date'). items available and the first item in the list isn't an empty string . If the user changes the value in the input, the value becomes a string like "123". You can't help this (you can create your ngControllerDirective, and try to trick the priority. I just stumbled upon this question, noted that you said using the setter won't allow to compare values, however that's not true, you can call your doSomething method and take 2 arguments the new and old values before actually setting the new value, another way would be storing the old value before setting and calling the method after that. It is bound with the DOM element. Angularjs Validation: Require at least one input from a list. What do you mean by "clear it"? Just removing the data with backspace? Then it makes sense to me that the resulting data stays the empty string. Is there any way we can use scope to check this. Check whether input field is empty in Controller May 22, 2013 · Quite simple: You could also use ng-hide="somefield. value is filled but I think I was doing it wrong. I should clarify that we need to use form validity as a different check. So you have to check if this is parsable. Edit: OP stated that issue was created by using JQuery's datepicker. e property binding from one component to other or we can say, from parent to child component. srkqi qip bdqfbf ozn mwoq yfymo fxch ywrbyh ibjh wovbyq