11.4.1-4.a-14.js (605B)
1 // Copyright (c) 2012 Ecma International. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 info: | 6 This test is actually testing the [[Delete]] internal method (8.12.8). Since the 7 language provides no way to directly exercise [[Delete]], the tests are placed here. 8 esid: sec-delete-operator-runtime-semantics-evaluation 9 description: delete operator returns true when deleting Array elements 10 ---*/ 11 12 var a = [1, 2, 3]; 13 a.x = 10; 14 var d = delete a[1]; 15 16 assert.sameValue(d, true, 'd'); 17 assert.sameValue(a[1], undefined, 'a[1]'); 18 19 reportCompare(0, 0);