Is there a way to track changes in input using backbone?
How it can be achieved in AngularJs:
<div ng-controller="W3">
<input type="text" ng-model="val" >
<p>{{val}}</p>
</div>
I would like the value of the input field to be displayed within <p></p>.
To include it as an event on your view, you need to do the following:
var MyView = Backbone.View.extend({
events: {
'keyup input': 'updateParagraph'
},
updateParagraph: function(ev) {
this.$('p').html(ev.target.value);
}
});
If you want to have multiple events, each one must be added individually like so:
events: {
'keyup input': 'updateParagraph',
'propertychange input': 'updateParagraph',
// etc.
}
If your view is associated with a model and the input should update the model, the following code should be used instead:
var MyView = Backbone.View.extend({
initialize: function() {
this.listenTo(this.model, 'change:text', this.updateParagraph);
},
events: {
'keyup input': 'updateModel'
},
updateModel: function(ev) {
var target = ev.target;
// Assuming that the input name is the model attribute
// To simplify, I'm just going to set something specific
this.model.set('text', target.value);
},
updateParagraph: function(model, value) {
// Set the input value as well, so it stays in sync
this.$('input').val(value);
this.$('p').html(value);
}
});
This method ensures that if the attribute on the model is changed in any other view, the paragraph will still update, regardless of whether it was from that specific input or not.
Express.js offers a wide range of middlewares that replace built-in functions. One example is body-parser, which parses HTTP request bodies, replacing the built-in function express.bodyParser. body-parser replaces the built-in function express.bodyParse ...
My React application includes a dynamic menu component created with Material-UI (@mui) that supports nested menus and submenus. I'm aiming to achieve a specific behavior where users can access other menus (such as parent menus) while keeping a submenu ...
I am attempting to show and hide data that is loaded using Ajax. $.ajax({ type: "POST", url: "/swip.php", data: {pid:sldnxtpst,sldnu:sldnu}, success: function(result) { $('.swip').prepend(result); } }); This data gets ...
I am trying to stub a method using sinon in my Typescript code with Bluebird promises. However, I'm running into an issue where only the first value I set for the stub is being returned, even though I want it to return a different value on the second ...
I am currently facing an error and unable to find a solution. Even after changing the title to 'title', the error persists. methods.vue: <template> <div> <h1>we may include some data here, with data number {{ counter ...
Last time, I asked about my code. Here is what I have currently: var secs = 100; setInterval(function() { var $badge = $('#nhb_01'); $badge.text((parseFloat($badge.text())+0.01).toFixed(2)); }, secs); I want the counter to increase by ...
I am just starting out with HTML, and I would like to show a message if JavaScript is disabled. To do this, I have placed the message within the <noscript> tag, which is working perfectly. <noscript> Need to enable Javascript. </noscript> ...
I am encountering difficulties in retrieving data that I pass to a child component. The issue may be related to the Promise not being resolved at the time of access, but I am unsure how to address it. My goal is to ensure that the data is fully retrieved f ...
I have declared the following files app.types.ts /// <reference path="../../typings/tsd.d.ts"/> module App{ export var Module = "website"; //---------------Controller Base Types--------------- export interface IScope extends ng.ISco ...
When I call a promise function: return $http.post("anyCtrl").then(location.reload); An 'Illegal invocation' exception is thrown in Angular on the browser console. However, when I change it to: return $http.post("anyCtrl").then(function(){loca ...
Currently diving into the Forms section within the documentation of ReactJS. Just implemented this code snippet to showcase the use of onChange (JSBIN). var React= require('react'); var ControlledForm= React.createClass({ getInitialState: f ...
I have a div with an image inside of it, and the overflow of the div is set to hidden so that the image will be cropped if it exceeds the width or height. It was working correctly, but sometimes it doesn't. What could be causing this issue? Here is th ...
Recently, I've been developing a new Angular app and I'm trying to ensure that it's compatible with IE8. It seems like the app is loading in the routing information and the template partially, but I keep encountering an error in the console ...
I am attempting to incorporate async await into a project that is event-driven, but encountering an error. The specific error message I am receiving is: tmpFile = await readFileAsync('tmp.png'); ^^^^^^^^^^^^^ SyntaxError: Unexpec ...
In my current project, I am working on adding authentication to a mobile app. The process involves the user clicking on a button, which opens a URL in an InAppBrowser. Once the authentication is completed, the browser is closed and the current user informa ...
I am facing an issue where I need to connect the bootstrap datepicker to an input field generated by AngularJS. The typical approach of using jQuery to attach the datepicker doesn't work as expected because the element is not yet available: $(functi ...
I have a piece of code where I am sending a post request to an API and retrieving all the data from the API in a table. I am trying to find currency data based on the currency name, if found I display the data in a div, if not found I want to print "not ...
I am currently working to modify some existing code to fit my website concept. One aspect I am struggling with is how to make the 'pause' function activate only when a user hovers over one of the li items, preventing the carousel from looping end ...
Currently, I am utilizing the DDCharts jQuery plugin from DDCharts JQuery to incorporate some charts into my website. After downloading the plugin and testing it in various browsers, I encountered an issue specifically with Internet Explorer 8+. Strangely, ...
Currently, as I construct my website using the bootstrap framework, I am facing a minor challenge. I want to activate a menu item based on the filename by utilizing an if statement. For instance, when the filename is "about," the "about" tab should be act ...