diff options
Diffstat (limited to 'node_modules/locutus/php/array/prev.js')
-rw-r--r-- | node_modules/locutus/php/array/prev.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/node_modules/locutus/php/array/prev.js b/node_modules/locutus/php/array/prev.js new file mode 100644 index 0000000..88f5511 --- /dev/null +++ b/node_modules/locutus/php/array/prev.js @@ -0,0 +1,52 @@ +'use strict'; + +module.exports = function prev(arr) { + // discuss at: http://locutus.io/php/prev/ + // original by: Brett Zamir (http://brett-zamir.me) + // note 1: Uses global: locutus to store the array pointer + // example 1: var $transport = ['foot', 'bike', 'car', 'plane'] + // example 1: prev($transport) + // returns 1: false + + var $global = typeof window !== 'undefined' ? window : global; + $global.$locutus = $global.$locutus || {}; + var $locutus = $global.$locutus; + $locutus.php = $locutus.php || {}; + $locutus.php.pointers = $locutus.php.pointers || []; + var pointers = $locutus.php.pointers; + + var indexOf = function indexOf(value) { + for (var i = 0, length = this.length; i < length; i++) { + if (this[i] === value) { + return i; + } + } + return -1; + }; + + if (!pointers.indexOf) { + pointers.indexOf = indexOf; + } + var arrpos = pointers.indexOf(arr); + var cursor = pointers[arrpos + 1]; + if (pointers.indexOf(arr) === -1 || cursor === 0) { + return false; + } + if (Object.prototype.toString.call(arr) !== '[object Array]') { + var ct = 0; + for (var k in arr) { + if (ct === cursor - 1) { + pointers[arrpos + 1] -= 1; + return arr[k]; + } + ct++; + } + // Shouldn't reach here + } + if (arr.length === 0) { + return false; + } + pointers[arrpos + 1] -= 1; + return arr[pointers[arrpos + 1]]; +}; +//# sourceMappingURL=prev.js.map
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