删除最后一个反斜杠后的所有内容 [英] Remove everything after last backslash

问题描述

var t = "\some\route\here"

我需要它的\some\route".

I need "\some\route" from it.

谢谢.

推荐答案

你需要 lastIndexOf 和 substr...

var t = "\\some\\route\\here";
t = t.substr(0, t.lastIndexOf("\\"));
alert(t);

此外，您需要将字符串中的 \ 字符加倍，因为它们用于转义特殊字符.

Also, you need to double up \ chars in strings as they are used for escaping special characters.

更新由于这经常被证明对其他人有用，因此这里有一个片段示例...

Update Since this is regularly proving useful for others, here's a snippet example...

// the original string
var t = "\\some\\route\\here";

// remove everything after the last backslash
var afterWith = t.substr(0, t.lastIndexOf("\\") + 1);

// remove everything after & including the last backslash
var afterWithout = t.substr(0, t.lastIndexOf("\\"));

// show the results
console.log("before            : " + t);
console.log("after (with \\)    : " + afterWith);
console.log("after (without \\) : " + afterWithout);

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