How to convert a string to an integer in JavaScript?

Question

How do I convert a string to an integer in JavaScript?

Answer 1

You can do it in several ways:

By using the Number function

var i=Number(“100”);

parseInt:

var i=parseInt(“100”,10)->10 means decimal

Unary plus:
var i=+”100”;

If your string might be a float and you want a integer:

var i=Math.floor(“100.01”);

Or

var floor=Math.floor;

var i=floor(“100.01”);

You can use parseFloat:

var floor=Math.floor;

var i=floor(parseFloat(“100.23”));

Math.out like this:

var round=Math.round;

var i=round(“100”);

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