由ES规范学JavaScript(二)：深入理解“连等赋值”问题

Wscats / CV

:see_no_evil:Front End Engineer Curriculum Vitae - 面试宝典和简历生成器

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Closed Wscats closed 2 years ago

Wscats commented 7 years ago

有这样一个热门问题：

var a = {n: 1};
var b = a;
a.x = a = {n: 2};
alert(a.x); // --> undefined
alert(b.x); // --> {n: 2}