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Question

Status: Closed Points: 75 Time: 19:18 - Oct 14, 2006

jgivoni

How do I mix regular expressions and strings in javascript?

This example replaces the word "cow" with "cat":
text.replace(/cow/, "cat");

But what if the word, I want to replace is stored in a string?
How do I make a regular expression based on a string without just making it take the name of the string literally?

(I know this works too;
s = "cow"
text.replace(s, "cat");
but I need to MIX a string with some regular expressions stuff)

Categories:

JavaScript regex

Answer Discussion

Tutorials

jgivoni

Date:: Oct 20, 2006

Time:: 20:55

I found the answer myself some days ago:

re = new RegExp(regex_as_string);

The RegExp function takes a string and converts it to a regular expression type. It seems quite confusing that there is a separate TYPE for regexp's but I guess it has to do with all the character escaping needing to be done if they were just strings. For instance I had to use a lot of double backslashes in the string.

Question Answered

This question has been closed, and points have been rewarded to the following experts:

jgivoni:

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