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31 lines
978 B
JavaScript
31 lines
978 B
JavaScript
/// Copyright (c) 2012 Ecma International. All rights reserved.
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/// Ecma International makes this code available under the terms and conditions set
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/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
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/// "Use Terms"). Any redistribution of this code must retain the above
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/// copyright and this notice and otherwise comply with the Use Terms.
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/**
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* @path ch15/15.4/15.4.4/15.4.4.21/15.4.4.21-9-6.js
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* @description Array.prototype.reduce visits deleted element in array after the call when same index is also present in prototype
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*/
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function testcase() {
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function callbackfn(prevVal, curVal, idx, obj)
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{
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delete arr[3];
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delete arr[4];
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return prevVal + curVal;
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}
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Array.prototype[4] = 5;
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var arr = ['1',2,3,4,5];
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var res = arr.reduce(callbackfn);
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delete Array.prototype[4];
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if(res === "1235" ) //one element acually deleted
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return true;
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}
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runTestCase(testcase);
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