JavaScript text manipulation

Question

Using JavaScript and I want to replace any text between @anytext@ with some text. I want to make it generic so I am thinking to make use of regular expression. How do I do it?

Example:replace('@hello@','Hi')

• Yacoby: Changed everything from jQuery to JavaScript, as it has nothing to do with jQuery.
• Dee: I need to make little manipulation in this.I need to retrieve the matched text and then replace the matched text.Something like this Replace("@anytext@",<a href=#>@anytext@</a>) My string can have @anytext@ any where in string multiple times.

Answer 1

Try this:

str.replace(/@[^@]+@/g, 'Hi')

This will remove any sequences of @ ... @ globally with Hi.

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Edit Some explanation:

• /.../ is the regular expression literal syntax in JavaScript
• @[^@]+@ describes any sequence of a literal @, followed by one or more (+ quantifier) characters that is not a @ (negated charcater class [^@]), followed by a literal @
• the g flag in /.../g allows global matches; otherwise only the first match would be replaced

• Dee: Works.Please provide some explanation.I didnt find any where so I can create my own Regular expressions.Thanks

Answer 2

You can use the regex function of jquery to accomplish that... So find the @'s with a regular expression and afterwards use the replace function with the text you want.

Answer 3

This has nothing to do with jQuery, but just plain old javascript.

var regexp = new RegExp("@([^@]+)@");
text.replace(re, "replacement text");

But what do you mean by generic? How generic do you want to make it?

You can find more information about regular expressions on http://regexp.info including how to use in in Javascript