blob: 04afa3c929c0b3569739e4a55cc6070bd94f9d49 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 21.1.3.18
description: >
Returns false if searchString is not found.
info: |
21.1.3.18 String.prototype.startsWith ( searchString [ , position ] )
...
11. Let len be the number of elements in S.
12. Let start be min(max(pos, 0), len).
13. Let searchLength be the number of elements in searchStr.
14. If searchLength+start is greater than len, return false.
15. If the sequence of elements of S starting at start of length searchLength
is the same as the full element sequence of searchStr, return true.
16. Otherwise, return false.
...
---*/
var str = 'The future is cool!';
assert.sameValue(
str.startsWith('Flash'), false,
'str.startsWith("Flash") === false'
);
assert.sameValue(
str.startsWith('THE FUTURE'), false,
'startsWith is case sensitive'
);
assert.sameValue(
str.startsWith('future is cool!'), false,
'str.startsWith("future is cool!") === false'
);
reportCompare(0, 0);
|
