Comments (1)
如果你想得到文章中描述的结果,可使用IE,在控制台中切换到 IE10 版本(更早版本也应该一样),然后运行程序。如果是 IE11 以及其他主流现代浏览器,已经完全支持 ES6 了,所以得不到结果 “2”。
另外,如你所说的去掉花括号:
if (something)
function foo() {
console.log( "1" );
}
else
function foo() {
console.log( "2" );
}
foo(); // ??
我在 IE11 中得到 “2”, 而在 chrome 中得到 “1”,我想这可能是因为两个浏览器对块儿作用域的解释上有所不同。
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