cafe-grader-web Files · node_modules/es5-ext/array/#/e-last-index-of.js

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                    node_modules/es5-ext/array/#/e-last-index-of.js
                
             | 31 lines
             | 954 B
             | application/javascript 
             | JavascriptLexer
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      "use strict";

      var numberIsNaN       = require("../../number/is-nan")

        , toPosInt          = require("../../number/to-pos-integer")

        , value             = require("../../object/valid-value")

        , lastIndexOf       = Array.prototype.lastIndexOf

        , objHasOwnProperty = Object.prototype.hasOwnProperty

        , abs               = Math.abs

        , floor             = Math.floor;

      module.exports = function (searchElement/*, fromIndex*/) {

      	var i, fromIndex, val;

      	if (!numberIsNaN(searchElement)) {

      		// Jslint: ignore

      		return lastIndexOf.apply(this, arguments);

      	}

      	value(this);

      	fromIndex = arguments[1];

      	if (isNaN(fromIndex)) fromIndex = toPosInt(this.length) - 1;

      	else if (fromIndex >= 0) fromIndex = floor(fromIndex);

      	else fromIndex = toPosInt(this.length) - floor(abs(fromIndex));

      	for (i = fromIndex; i >= 0; --i) {

      		if (objHasOwnProperty.call(this, i)) {

      			val = this[i];

      			if (numberIsNaN(val)) return i; // Jslint: ignore

      		}

      	}

      	return -1;

      };

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				"use strict";

				var numberIsNaN = require("../../number/is-nan")
				, toPosInt = require("../../number/to-pos-integer")
				, value = require("../../object/valid-value")
				, lastIndexOf = Array.prototype.lastIndexOf
				, objHasOwnProperty = Object.prototype.hasOwnProperty
				, abs = Math.abs
				, floor = Math.floor;

				module.exports = function (searchElement/, fromIndex/) {
				var i, fromIndex, val;
				if (!numberIsNaN(searchElement)) {
				// Jslint: ignore
				return lastIndexOf.apply(this, arguments);
				}

				value(this);
				fromIndex = arguments[1];
				if (isNaN(fromIndex)) fromIndex = toPosInt(this.length) - 1;
				else if (fromIndex >= 0) fromIndex = floor(fromIndex);
				else fromIndex = toPosInt(this.length) - floor(abs(fromIndex));

				for (i = fromIndex; i >= 0; --i) {
				if (objHasOwnProperty.call(this, i)) {
				val = this[i];
				if (numberIsNaN(val)) return i; // Jslint: ignore
				}
				}
				return -1;
				};