Need form to change it’s action depending on the selection from a specific drop down menu. On change should trigger the script and change the action before user submits. Easier said than done when you’re new to JS.. thanks for any help! Answer Your code is missing the part to get the selected item…
Tag: javascript
What does it mean by “message queue” in this link?
I was trying to understand what’s an event loop in JavaScript. Came across Mozilla Developer Network’s link about event loop. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/EventLoop It mentions Queue A JavaScript runtime contains a message queue, which is a list of messages to be p…
Jquery Validation: allow only alphabets and spaces
My validation accepts only alphabets. I want allow spaces as well. What change needs to be done here? Answer Instead of the below regex: Use this: This will also take the space.
How to make a promise from setTimeout
This is not a realworld problem, I’m just trying to understand how promises are created. I need to understand how to make a promise for a function that returns nothing, like setTimeout. Suppose I have: How do I create a promise that async can return after the setTimeout is ready to callback()? I suppose…
search and replace text inside html of div in javascript but not text inside tag
I’ve some HTML structure and i want to search particular text inside that HTML structure. see below example Now if I’m searching for “span” text then, “span” word should be wrapped with div tag. But only “span” word in text and not from class or other tags. i wa…
Binary Search in Javascript
I’m trying to implement a binary search algorithm in JavaScript. Things seem okay, but my return statements appear to be returning undefined. Can anybody tell me what’s wrong here? Fiddle: http://jsfiddle.net/2mBdL/ Answer You’re not explicitly returning the recursive inner calls (i.e. retur…
React.js: onChange event for contentEditable
How do I listen to change events for a contentEditable-based control? Code on JSFiddle. Answer See Sebastien Lorber’s answer which fixes a bug in my implementation. Use the onInput event, and optionally onBlur as a fallback. You might want to save the previous contents to prevent sending extra events. I…
Getting BackBone.JS to set up a form and fill in the data
I am very new to backbone and I am trying to get my head around it, but can not figure out what I am doing wrong. I am not using backbones router, I do not need to, I am using PHP Slim to handle all the routes, I am not sure if that is right or not? But what I
Remove duplicate objects from JSON file in JavaScript
This is the current JSON file: I want to remove the duplicate Steve individual from the list. How can I make a new JSON that checks if the object’s name matches and remove any duplicates in JavaScript? Answer You must load the JSON data in to the program and parse that with JSON.parse, like this To filt…
Getting the url parameters inside the html page
I have a HTML page which is loaded using a URL that looks a little like this: I would like to obtain the query string parameters in the URL without using a jsp. Questions Can this be done using Javascript or jQuery? Because I want to test my page using my Node.js local server before deploying it in the remote