Replace the javascript code in html by javascript

Question

I am trying to replace the javascript code in html by javascript

So I am testing like this.

var test = new String("<script type=\"text/javascript\"> test </script>");

test.replace(/<script type=\"text\/javascript\">.+<\/script>/g,"");
//this doesn't match

console.log(test.toString());

test.replace doesn't match and console.log shows this.(nothing happens!)

<script type="text/javascript"> test </script>

Is there any mistake??

.replace returns a new string. But the more important question is, why are doing this? What problem are you trying to solve here? — Felix Kling
– Felix Kling, Commented Feb 16, 2014 at 22:46
An aside not an answer, but you don't need new String() or .toString() there - every string in JS is an object of type string. — IMSoP
– IMSoP, Commented Feb 16, 2014 at 22:46
@IMSoP: Well, not quite. Most are string primitives. Using new String is a terribly bad idea. Anyways, whitebear: why’re you trying to do this? It doesn’t seem like a good idea somehow. — Ry-
– Ry- ♦, Commented Feb 16, 2014 at 22:47
@IMSoP: Technically no. There are string primitives and string objects and they behave slightly differently. You should never use new String thought, because it makes things very confusing. — Felix Kling
– Felix Kling, Commented Feb 16, 2014 at 22:47

spiehr · Accepted Answer · 2014-02-16 22:58:40Z

2

test.replace returns the replaced string, it does not replace test in place.

See also https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace

edited Feb 16, 2014 at 22:58

answered Feb 16, 2014 at 22:46

spiehr

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