How to use compile in JavaScript

Posted in JavaScript | JavaScript Objects on July 29, 2019

This article describe about compile() Method in JavaScript.

compile() Method in JavaScript

It is used to compile a regular expression during execution of a script.

And it is also used to change and recompile a regular expression.

Syntax

RegExpObject.compile(regexp,modifier)

Parameter	Description
regexp	A regular expression
modifier	Define the Type of matching "g" for global. "i" for case sensitive and "gi" for global case sensitive.

Example

<!DOCTYPE html>

<html>

<body>

var str = "Everyone live in the world! Every womanlive on earth!";

var pattern = /live/g;

var str2 = str.replace(pattern, "person");

document.write(str2 + "<br />");

pattern = /(wo)?live/g;

pattern.compile(pattern);

str2 = str.replace(pattern, "person");

document.write(str2);

</script>

</body>

</html>

Output

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