Replace special characters in JavaScript

Question

How to replace '$txt$' in javascript.I want to replace all occurrences in the string

It's what i tried

if (html.indexOf('$txt$') > -1) {
    html = html.replace(/$txt$/ig, '<input type=text></input>');
}

but it won't replace the string.What's my mistake.Please help me

Daniel van Dommele · Accepted Answer · 2012-04-19 12:42:02Z

8

all you need to do is escape the $ sign since it has a meaning in a regular expression. Change it to

html = html.replace(/\$txt\$/ig, '<input type="text" />');

and it should be fine :)

edit: $ means end of line in a regular expression :)

answered Apr 19, 2012 at 12:42

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Comments

Nagaraju Badaeni · Accepted Answer · 2012-04-19 12:46:26Z

0

html = html.replace(/[$]txt[$]/ig, ''); use this

answered Apr 19, 2012 at 12:46

Nagaraju Badaeni

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Barney · Accepted Answer · 2012-04-19 16:23:28Z

0

You're replacing using regular expressions, and $ is a regular expression reserved special character for end of line/string.

You need to escape the $ by preceding it with a backward slash \ to make it hit its literal character:

if (html.indexOf('$txt$') > -1) {
    html = html.replace(/\$txt\$/ig, '<input type=text></input>');
}

answered Apr 19, 2012 at 12:48

Barney

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that's a backward slash, what is used to escape a speial character.