How to set a Javascript object values dynamically?
myObj[prop] = value; That should work. You mixed up the name of the variable and its value. But indexing an object with strings to get at its properties works fine in JavaScript.
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(…()) vs. (…)() in javascript closures [duplicate]
There’s no difference. Both are valid ways to get the JavaScript parser to treat your function as an expression instead of a declaration. Note that + and ! will also work, and are sometimes used by minifiers to save a character of size: +function() { var foo = ‘bar’; }(); !function() { var foo = … Read more
On Text Highlight Event?
There isn’t any onhighlightext or anything like that, but a solution would be to bind onmouseup to check if any text is selected if this isn’t in a input/textarea. Edit Here’s an implementation example for you. I only tested this in Chrome/Firefox/IE7. This works in inputs as well. http://jsfiddle.net/qY7gE/ Code from JSFiddle: var t=””; function … Read more
How to Use Sockets in JavaScript\HTML? [closed]
How to Use Sockets in JavaScript/HTML? There is no facility to use general-purpose sockets in JS or HTML. It would be a security disaster, for one. There is WebSocket in HTML5. The client side is fairly trivial: socket= new WebSocket(‘ws://www.example.com:8000/somesocket’); socket.onopen= function() { socket.send(‘hello’); }; socket.onmessage= function(s) { alert(‘got reply ‘+s); }; You will need … Read more
Using jQuery, Restricting File Size Before Uploading
This is a copy from my answers in a very similar question: How to check file input size with jQuery? You actually don’t have access to the filesystem (for example reading and writing local files). However, due to the HTML5 File API specification, there are some file properties that you do have access to, and … Read more
How to pause and resume CSS3 animation using JavaScript?
I find it easier to do it with a css class. With it, you can use prefixes for every browser. .paused{ -webkit-animation-play-state:paused; -moz-animation-play-state:paused; -o-animation-play-state:paused; animation-play-state:paused; } Then you only have to add or remove this class to your animated element yo pause / resume the animation.
Unobtrusive JavaScript: at the top or the bottom of the HTML code?
There are two possibilities for truly unobtrusive scripts: including an external script file via a script tag in the head section including an external script file via a script tag at the bottom of the body (before </body></html>) The second one can be faster as the original Yahoo research showed some browsers try to load … Read more
ES6 template literals vs. concatenated strings
If you are using template literals only with placeholders (e.g. `Hello ${person.name}`) like in the question’s example, then the result is the same as just concatenating strings. Subjectively it looks better and is easier to read, especially for multi-line strings or strings containing both ‘ and ” since you don’t have to escape those characters … Read more
Getting the parent div of element
You’re looking for parentNode, which Element inherits from Node: parentDiv = pDoc.parentNode; Handy References: DOM2 Core specification – well-supported by all major browsers DOM2 HTML specification – bindings between the DOM and HTML DOM3 Core specification – some updates, not all supported by all major browsers HTML5 specification – which now has the DOM/HTML bindings … Read more