JavaScript String startsWith() method
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Definition and usage
if the string starts with the specified string startsWith() The method returns true, otherwise return false.
startsWith() Methods are case-sensitive.
See also:
Instance
Example 1
Starting from position 0:
let text = "Hello world, welcome to the universe.";
text.startsWith("Hello");
Example 2
Starting from position 6:
let text = "Hello world, welcome to the universe.";
text.startsWith("world", 7);
Syntax
string.startsWith(searchValue, start)
Parameters
| Parameters | Description |
|---|---|
| searchValue | Required. The string to search for. |
| start | Optional. Starting position. Default value is 0. |
Return value
| Type | Description |
|---|---|
| Boolean value |
return if the string starts with this value otherwise return |
Browser support
startsWith() is an ECMAScript6 (ES6) feature.
All browsers support ES6 (JavaScript 2015):
| Chrome | Edge | Firefox | Safari | Opera |
|---|---|---|---|---|
| Chrome | Edge | Firefox | Safari | Opera |
| supports | supports | supports | supports | supports |
Internet Explorer 11 (or earlier versions) does not support startsWith().
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