The hasIndices
property indicates whether or not the "d
" flag is used with the regular expression. hasIndices
is a read-only property of an individual regular expression instance.
RegExp.prototype.hasIndices
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Property attributes of RegExp.prototype.hasIndices |
|
---|---|
Writable | no |
Enumerable | no |
Configurable | yes |
Description
The value of hasIndices
is a Boolean
and true
if the "d
" flag was used; otherwise, false
. The "d
" flag indicates that the result of a regular expression match should contain the start and end indices of the substrings of each capture group.
You cannot change this property directly.
Examples
Using hasIndices
const str1 = 'foo bar foo'; const regex1 = new RegExp('foo', 'gd'); console.log(regex1.hasIndices); // Output: true console.log(regex1.exec(str1).indices[0]); // Output: Array [0, 3] console.log(regex1.exec(str1).indices[0]); // Output: Array [8, 11] const str2 = 'foo bar foo'; const regex2 = new RegExp('foo'); console.log(regex2.hasIndices); // Output: false console.log(regex2.exec(str2).indices); // Output: undefined
Specifications
Browser compatibility
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
hasIndices |
90
|
90
|
88
|
No
|
76
|
15
|
90
|
90
|
88
|
64
|
15
|
15.0
|
1.8
|
No
|
See also
© 2005–2022 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/hasIndices