Sha256: 47fd709c899120287797dbe6396e4e4e383c5f8ab61140bd3ee0f41b97400ea4
Contents?: true
Size: 964 Bytes
Versions: 82
Compression:
Stored size: 964 Bytes
Contents
'use strict';
var $export = require('./_export');
var toIObject = require('./_to-iobject');
var toInteger = require('./_to-integer');
var toLength = require('./_to-length');
var $native = [].lastIndexOf;
var NEGATIVE_ZERO = !!$native && 1 / [1].lastIndexOf(1, -0) < 0;
$export($export.P + $export.F * (NEGATIVE_ZERO || !require('./_strict-method')($native)), 'Array', {
// 22.1.3.14 / 15.4.4.15 Array.prototype.lastIndexOf(searchElement [, fromIndex])
lastIndexOf: function lastIndexOf(searchElement /* , fromIndex = @[*-1] */) {
// convert -0 to +0
if (NEGATIVE_ZERO) return $native.apply(this, arguments) || 0;
var O = toIObject(this);
var length = toLength(O.length);
var index = length - 1;
if (arguments.length > 1) index = Math.min(index, toInteger(arguments[1]));
if (index < 0) index = length + index;
for (;index >= 0; index--) if (index in O) if (O[index] === searchElement) return index || 0;
return -1;
}
});
Version data entries
82 entries across 38 versions & 8 rubygems