porcelainheart / es6-study-notes Goto Github PK
View Code? Open in Web Editor NEW面向新手的ES6入门指南,可能是对新手最友好的中文ES6教程
License: Other
面向新手的ES6入门指南,可能是对新手最友好的中文ES6教程
License: Other
问题:这句话(注意被赋值的是同名属性的值,这里是name 而不是firseName),应该是firstName吧。
其实就是这个例子,
Math.pow(99, 99)
// 3.697296376497263e+197
99 ** 99
// 3.697296376497268e+197
由于**是在编译时计算,而Math.pow是在执行时间计算,导致结果不同。
举例:
x = 99, y = 99;
x ** y;
// 3.697296376497263e+197
但是这是不应该的,答案不同是错误表现。现在已经有人给V8提交bug。
嘻嘻
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