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
|
// Copyright 2015 Microsoft Corporation. All rights reserved.
// This code is governed by the license found in the LICENSE file.
/*---
description: Elements are updated after the call to from
esid: sec-array.from
es6id: 22.1.2.1
---*/
var array = [127, 4, 8, 16, 32, 64, 128];
var arrayIndex = -1;
function mapFn(value, index) {
arrayIndex++;
if (index + 1 < array.length) {
array[index + 1] = 127;
}
assert.sameValue(value, 127, "Value mismatch in mapFn at index " + index + ".");
assert.sameValue(index, arrayIndex, "Index mismatch in mapFn.");
return value;
}
var a = Array.from(array, mapFn);
assert.sameValue(a.length, array.length, "Length mismatch.");
for (var j = 0; j < a.length; j++) {
assert.sameValue(a[j], 127, "Element mismatch for mapped array.");
}
|
