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How can I get seconds since epoch in Javascript?
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Re: arcane magic: Per these docs, Javascript knows how to convert a Date object to a Number. This means that you can type Number(new Date()) to get a number, or even +(new Date()), or use any Date instance in a numerical context such as new Date()/1000 and J...
Scroll to the top of the page using JavaScript?
How do I scroll to the top of the page using a JavaScript? It is desirable even if the scrollbar instantly jumps to the top. I'm not looking for a smooth scrolling.
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How can I remove the decimal part from JavaScript number?
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@Jake The result of 2.3*100 in javascript is 229.99999999999997, so it seems the bitwise operator is doing its job correctly in your example.
– Chad von Nau
Apr 1 '16 at 0:28
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How to instantiate a File object in JavaScript?
There's a File object in JavaScript. I want to instantiate one for testing purposes.
6 Answers
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Array vs. Object efficiency in JavaScript
... some misconceptions in your question.
There are no associative arrays in Javascript. Only Arrays and Objects.
These are arrays:
var a1 = [1, 2, 3];
var a2 = ["a", "b", "c"];
var a3 = [];
a3[0] = "a";
a3[1] = "b";
a3[2] = "c";
This is an array, too:
var a3 = [];
a3[29938] = "a";
a3[32994] = "b...
How do I replace a character at a particular index in JavaScript?
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In JavaScript, strings are immutable, which means the best you can do is to create a new string with the changed content and assign the variable to point to it.
You'll need to define the replaceAt() function yourself:
String.p...
Where am I wrong about my project and these Javascript Frameworks?
...skin" your UI's to further customize the look and feel.
If you are new to JavaScript, and are comfortable with Java, you might even look into a server-side solution such as GWT, JSF, or even Vaadin
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Javascript: Setting location.href versus location
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URL assignments to both location.href and location are defined to work in JavaScript 1.0, back in Netscape 2, and have been implemented in every browser since. So take your pick and use whichever you find clearest.
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Asynchronous Process inside a javascript for loop [duplicate]
...you have to uniquely save the loop index separately for each callback. In Javascript, the way to do that is to capture it in a function closure. That can either be done be creating an inline function closure specifically for this purpose (first example shown below) or you can create an external fu...
How to add anything in through jquery/javascript?
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JavaScript:
document.getElementsByTagName('head')[0].appendChild( ... );
Make DOM element like so:
link=document.createElement('link');
link.href='href';
link.rel='rel';
document.getElementsByTagName('head')[0].appendChi...