js 的神奇
escape unescape
understanding-primitive-and-getter-setters
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| console.log(a==1&&a==2&a==3);//true
console.log(a===1&&a===2&a===3);//true
|
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| const a = { value : 0 };
a.valueOf = function() {
return this.value += 1;
};
console.log(a==1 && a==2 && a==3); //true
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| var value = 0; //window.value
Object.defineProperty(window, 'a', {
get: function() {
return this.value += 1;
}
});
console.log(a===1 && a===2 && a===3) /true
|
http://theanubhav.com/2018/11/07/understanding-primitive-and-getter-setters/
https://ivweb.io/article.html?_id=100337
