為什么用javascript替換引發錯誤

Question

我在第一個逗號不斷收到此錯誤“ SyntaxError：語法錯誤”，我應該更改使其起作用嗎？

if (location.pathname.replace(/^//,'') == this.pathname.replace(/^//,'') && location.hostname == this.hostname)

Answer 1

您需要在正則表達式中轉義正斜杠

if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname)

Answer 2

是雙斜線，

if (location.pathname.replace(/^/,'') == this.pathname.replace(/^/,'') && location.hostname == this.hostname)

Answer 3

使用RegExp構造函數

var regexp = new RegExp("^/", "");
if (location.pathname.replace(regexp,'') == this.pathname.replace(regexp,'') && location.hostname == this.hostname)

或轉義字符/

if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname)