Strict mode Passingnon-Strict mode Passing
Features:
- Symbol
// 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.has description: > Returns true for existing keys, using different key types. info: | Map.prototype.has ( key ) 5. Repeat for each Record {[[key]], [[value]]} p that is an element of entries, i. If p.[[key]] is not empty and SameValueZero(p.[[key]], key) is true, return true. ... features: [Symbol] ---*/ var map = new Map(); var obj = {}; var arr = []; var symb = Symbol(); map.set('str', undefined); map.set(1, undefined); map.set(NaN, undefined); map.set(true, undefined); map.set(false, undefined); map.set(obj, undefined); map.set(arr, undefined); map.set(symb, undefined); map.set(null, undefined); map.set(undefined, undefined); assert.sameValue(map.has('str'), true); assert.sameValue(map.has(1), true); assert.sameValue(map.has(NaN), true); assert.sameValue(map.has(true), true); assert.sameValue(map.has(false), true); assert.sameValue(map.has(obj), true); assert.sameValue(map.has(arr), true); assert.sameValue(map.has(symb), true); assert.sameValue(map.has(null), true); assert.sameValue(map.has(undefined), true);