JavaScript RegExp g Modifier
Example
Do a global search for "is":
let pattern = /is/g;
let result = text.match(pattern);
Try it Yourself »
Definition and Usage
The "g" modifier specifies a global match.
A global match finds all matches (compared to only the first).
Browser Support
/regexp/g is an ECMAScript1 (ES1) feature.
ES1 (JavaScript 1997) is fully supported in all browsers:
| Chrome | IE | Edge | Firefox | Safari | Opera |
| Yes | Yes | Yes | Yes | Yes | Yes |
Syntax
new RegExp("regexp", "g")
or simply:
/regexp/g
More Examples
Using the RegExp function exec():
let text = "Is this all there is?";
let pattern = /is/g;
let result = pattern.exec(text);
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Using the RegExp function test():
let pattern = /is/g;
let result = pattern.test(text);
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Using the String function match():
let pattern = /is/g;
let result = text.match(pattern);
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Tip
For a global, case-insensitive search, use the "i" modifier together with the g modifier.
A global, case-insensitive search for "is":
Using the RegExp function exec():
let text = "Is this all there is?";
let result = /is/gi.exec(text);
Try it Yourself »
Using the RegExp function test():
let text = "Is this all there is?";
let result = /is/gi.test(text);
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Using the String function match():
let text = "Is this all there is?";
let result = text.match(/is/gi);
Try it Yourself »
Tip
You can use the global property to check if the g modifier is set.
Regular Expression Search Methods
In JavaScript, a regular expression text search, can be done with different methods.
With a pattern as a regular expression, these are the most common methods:
| Example | Description |
|---|---|
| text.match(pattern) | The String method match() |
| text.search(pattern) | The String method search() |
| pattern.exec(text) | The RexExp method exec() |
| pattern.test(text) | The RegExp method test() |
