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JavaScript/jQuery String Replace With Regex

rated 0 times [ 7] [ 5] / answers: 1 / hits: 113988 / 11 Years ago, mon, april 22, 2013, 12:00:00

Let's say I retrieve the value of a <textarea> using jQuery. How can I then replace a portion of the value using JavaScript/jQuery. For example:

string: Hey I'm $$zach$$

replace $$zach$$ with <i>Zach</i>

And still keep the rest of the string intact?

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answered 11 Years ago kennedi · Accepted Answer

Use a regex replace:

yourTextArea.value = yourTextArea.value.replace(/$$(.+?)$$/, '<i>$1</i>')

Explanation of the regex:

$$  two dollar signs

(     start a group to capture

.     a character

+     one or more

?     lazy capturing

)     end the group

$$  two more dollar signs

The capture group is then used in the string '<i>$1</i>'. $1 refers to the group that the regex has captured.