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.
As I embark on creating a simple example React project, my goal is to utilize the npm package drag and drop file picker found at: https://www.npmjs.com/package/@yelysei/react-files-drag-and-drop To begin, I initiated a fresh React project using npx create ...
Is there a way to programmatically close the Date/Time Picker in Material UI Library? ...
I'm currently attempting to send a request from a containerized AngularJS frontend to a nodejs backend on AWS through Kubernetes (KOPS). I've set up a service to connect the two applications. In Kubernetes services, the frontend type is LoadBala ...
I'm having trouble figuring out how to display certain data from my MongoDB schema in a React component. Here is my MongoDB schema: const postSchema = new mongoose.Schema({ userID: { type: String }, dateTime: { type: Date, default: Date.now } ...
I used npm to install the package called aws-s3-zipper, but now I am encountering an error. This is the code snippet causing the issue: AWS = require("aws-sdk"); var S3Zipper = require("aws-s3-zipper"); function zipFolderOnS3() { var zipper = new S3 ...
Currently, I am working on a project that involves multiple spans placed side by side, with each span containing a letter of the text. My aim is to create a functionality where hovering over one of these spans will not only hide that particular span but al ...
Here is the code snippet: jsFiddle I have successfully implemented a click event to change the style of selected dots in dotline. Now, my query is : How can I enable dragging functionality for the dot icon within dotline? Your assistance on this matte ...
I'm encountering an issue while using getStaticProps(). I am working with nextjs and passing the returned value as props to a component. Despite trying various methods such as await and JSON.stringify(), nothing seems to be effective in resolving the ...
I've been experimenting with a websocket to retrieve user information. When I establish the connection and send messages to receive the data, it returns undefined when I try to use that information elsewhere. However, if I run console.log within the ...
Exploring some basic jQuery and JavaScript here. When I use the .width() method, I get an integer value. However, when I use .css('min-width'), it returns a value in pixels which makes it challenging to perform calculations. What would be the be ...
Having trouble with creating a function that automatically generates an object and then alerts its properties. Can't seem to get the alerts when I click the button. Any assistance would be appreciated. <html> <head> <s ...
As a newcomer to Ionic, I am finding navigation to be the most challenging aspect. My app has two tabs - "Dashboard" and "Friends". When I click on the Dashboard tab, I want it to navigate to a subview called "subview_dash", without displaying the tabs in ...
Seeking advice, I am using a jquery function called alphanumers var alphanumers = /^[a-zA-Z0-9- ]*$/; which currently does not allow all symbols. However, I now wish to disallow the space character as well. Any suggestions? ...
My task involves generating a zip file using Angular and other JavaScript libraries. Unfortunately, the code I'm currently using does not produce a proper zip file. When attempting to open the downloaded zip file, I encounter the error message: An err ...
After creating the codesandbox, I have developed a webapp that heavily relies on user input. To keep it simple for demonstration purposes, I am displaying various authors on an A4 formatted page using `page` and `font-size` with the `vw` unit for responsiv ...
There must be something simple that I'm missing here. I've checked my code line by line, but for some reason, the image just won't load. var displayImage = function(){ var stage = new Kinetic.Stage("imgarea", 250, 256); var layer = new ...
Below is the code snippet : let namesList = ref([]); const GetFormData = (payload) => { return new Promise((resolve, reject) => { api .get("api.php", { params: { search: payload } }) .then((response) => { data. ...
Issue encountered after upgrading angular cli to beta 9: Failed to load resource: the server responded with a status of 404 (Not Found) zone.js:461 Unhandled Promise rejection: (SystemJS) Error: XHR error (404 Not Found) loading http://localhost:4200/symb ...
I am currently working on implementing RecordRTC.js to capture audio from a microphone and then upload it to a server built with nancyfx. Initially, I am simply aiming to upload the audio stream and store it in a wav file for testing purposes. However, my ...
I am encountering an issue while attempting to send user input data to my tRPC API. Every time I try to send my query, I receive an error stating that React Hooks can only be used inside a function component. It seems that I cannot call tRPC's useQuer ...