JavaScript RegExp替换 [英] JavaScript RegExp Replace

问题描述

不确定我在哪里做错了。我有一个字符串，如Test（123x），我试图找到（123x）并替换它没有：

Not sure where I am doing wrong. I have a string such as Test (123x) and I am trying to find the (123x) and replace it with nothing:

这是我的代码

<script type="text/javascript">
    var original = "Test (1x)";
    var newString = original.replace(new RegExp("\(\d{1,6}[x]{1}\)",original),"");
    console.log(newString);
</script>

我测试了正则表达式模式并且匹配正确，但是，当我登录到控制台时，它是不能用替换（1x）

I have tested the regex pattern and it matches correctly, however, when I log to the console, it's not replacing (1x) with ""

推荐答案

你应尽可能使用 RegExp 文字：

var original = "Test (1x)";
var newString = original.replace(/\(\d{1,6}[x]{1}\)/,"");

您的尝试失败，因为\（\d {1,6 } [x] {1} \）被解释为（d {1,6} [x] {1}） （ \ 只是为了未知的转义序列而被剥离）。您还需要转义 \ ：

Your attempt fails as "\(\d{1,6}[x]{1}\)" is interpreted as "(d{1,6}[x]{1})" (\‍ are simply stripped for unknown escape sequences). You would need to escape the \ as well:

new RegExp("\\(\\d{1,6}[x]{1}\\)",original)

除此之外， RegExp 构造函数的第二个参数用于标志（ g =全局替换， i =不区分大小写等。）

Besides that, the second parameter for the RegExp constructor is for the flags (g=global replace, i=case insensitive, etc.).

这篇关于JavaScript RegExp替换的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！