Strict mode Passingnon-Strict mode Passing
Features:
- ∅
// Copyright (C) 2015 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-map.prototype.forEach description: > Repeats for each non-empty record, in original key insertion order. info: | Map.prototype.forEach ( callbackfn [ , thisArg ] ) ... 5. If thisArg was supplied, let T be thisArg; else let T be undefined. 6. Let entries be the List that is the value of M’s [[MapData]] internal slot. 7. Repeat for each Record {[[key]], [[value]]} e that is an element of entries, in original key insertion order a. If e.[[key]] is not empty, then i. Let funcResult be Call(callbackfn, T, «e.[[value]], e.[[key]], M»). ... ---*/ var map = new Map([ ['foo', 'valid foo'], ['bar', false], ['baz', 'valid baz'] ]); map.set(0, false); map.set(1, false); map.set(2, 'valid 2'); map.delete(1); map.delete('bar'); // Not setting a new key, just changing the value map.set(0, 'valid 0'); var results = []; var callback = function(value) { results.push(value); }; map.forEach(callback); assert.sameValue(results[0], 'valid foo'); assert.sameValue(results[1], 'valid baz'); assert.sameValue(results[2], 'valid 0'); assert.sameValue(results[3], 'valid 2'); assert.sameValue(results.length, 4); map.clear(); results = []; map.forEach(callback); assert.sameValue(results.length, 0);