Bo Kou MrKou47
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| function Car() { | |
| console.log(this); | |
| console.log(this instanceof Car); | |
| this.a = 'i am a '; | |
| } | |
| var t = new Car(); | |
| var tt = Car(); | |
| console.log(t); |
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| /** | |
| * 单例模式 | |
| * 避免重复创建相同对象 | |
| * example: | |
| * let a = new TestClass(); | |
| * let b = new TestClass(); | |
| * a === b // false | |
| * 如何a===b 为 true | |
| */ |
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