You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
29 lines
933 B
JavaScript
29 lines
933 B
JavaScript
6 years ago
|
'use strict';
|
||
|
|
var $export = require('./_export');
|
||
|
|
var html = require('./_html');
|
||
|
|
var cof = require('./_cof');
|
||
|
|
var toAbsoluteIndex = require('./_to-absolute-index');
|
||
|
|
var toLength = require('./_to-length');
|
||
|
|
var arraySlice = [].slice;
|
||
|
|
|
||
|
|
// fallback for not array-like ES3 strings and DOM objects
|
||
|
|
$export($export.P + $export.F * require('./_fails')(function () {
|
||
|
|
if (html) arraySlice.call(html);
|
||
|
|
}), 'Array', {
|
||
|
|
slice: function slice(begin, end) {
|
||
|
|
var len = toLength(this.length);
|
||
|
|
var klass = cof(this);
|
||
|
|
end = end === undefined ? len : end;
|
||
|
|
if (klass == 'Array') return arraySlice.call(this, begin, end);
|
||
|
|
var start = toAbsoluteIndex(begin, len);
|
||
|
|
var upTo = toAbsoluteIndex(end, len);
|
||
|
|
var size = toLength(upTo - start);
|
||
|
|
var cloned = new Array(size);
|
||
|
|
var i = 0;
|
||
|
|
for (; i < size; i++) cloned[i] = klass == 'String'
|
||
|
|
? this.charAt(start + i)
|
||
|
|
: this[start + i];
|
||
|
|
return cloned;
|
||
|
|
}
|
||
|
|
});
|