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wangyuan0108 / fe-qa

知识和笔记，整理分享，以便提升和巩固
https://github.com/wangyuan0108/blog/issues
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如何让if(a == 1 && a == 2)条件成立？ #77

Open wangyuan0108 opened 4 years ago

wangyuan0108 commented 4 years ago 

var a = {
  value: 0,
  valueOf: function() {
    this.value++;
    return this.value;
  }
};
console.log(a == 1 && a == 2);//true