Javascript 从变量中删除括号和尾随空格

删除括号和任何（但仅限于）尾随空格的好正则表达式是什么

---

示例：

“Hello[world]-这是什么？”

将转换为

“Hello-这是什么？”

您可以这样做：

var result = mystring.replace(/^\s*\[[^]]+]\s*|\s*\[[^]]+]\s*$|(\s)\s*\[[^]]+]\s*/g, '$1');

---

可以让表达式在括号内的内容和尾随空格之间交替：

str.replace(/\[[^\]]*\]|\s+$/g, '')

/g

修饰符用于匹配所有引用，而不是仅匹配第一个引用（默认值）

更新

如果

[hello]

前面有一个空格，则该空格不会被删除，您需要另一个

.replace（）

而不是替换：

str.replace(/\[[^\]]*\]/g, '').replace(/\s+$/, '');

---

使用下面的正则表达式。它将删除括号及其尾随空格

/(\s\s)*(\s(?=\[.*?\]\s))*\[.*?\](\s\s)*/g

用法：

var testStr = "Hello [world] - what is this?";
console.log(testStr.replace(/(\s\s)*(\s(?=\[.*?\]\s))*\[.*?\](\s\s)*/g, ""));

输入/输出：

Input: Hello [world] - what is this?            Output: Hello - what is this?
Input: Hello [world] - what  is  this?          Output: Hello - what  is  this?
Input: Hello [world] - what is     this?        Output: Hello - what is     this?
Input: Hello      [world] - what is this?       Output: Hello - what is this?
Input: Hello      [world]     - what is this?   Output: Hello - what is this?
Input: Hello [world]       - what is this?      Output: Hello - what is this?
Input: Hello [world]- what is this?             Output: Hello - what is this?
Input: Hello       [world]- what is this?       Output: Hello - what is this?
Input: Hello[world] - what is this?             Output: Hello - what is this?
Input: Hello[world]       - what is this?       Output: Hello - what is this?
Input: Hello[world]- what is this?              Output: Hello- what is this? 

---

你是说括号里的词？或者任何以

[

开头并以

]

结尾的内容。到目前为止你做了什么？（+1）最简单、最优化的我想他指的是在方括号后，而不是在括号的末尾加上空格string@acdcjunior我想你的意思是最后一个括号内的表达式之前的空格没有被删除？是的，刚刚注意到了，并修复了。@simonzack好吧，我想这有点可以解释：）就是这样-其他人删除了括号中的前导空格和尾随空格，或者保留空格不变-谢谢！

Input: Hello [world] - what is this?            Output: Hello - what is this?
Input: Hello [world] - what  is  this?          Output: Hello - what  is  this?
Input: Hello [world] - what is     this?        Output: Hello - what is     this?
Input: Hello      [world] - what is this?       Output: Hello - what is this?
Input: Hello      [world]     - what is this?   Output: Hello - what is this?
Input: Hello [world]       - what is this?      Output: Hello - what is this?
Input: Hello [world]- what is this?             Output: Hello - what is this?
Input: Hello       [world]- what is this?       Output: Hello - what is this?
Input: Hello[world] - what is this?             Output: Hello - what is this?
Input: Hello[world]       - what is this?       Output: Hello - what is this?
Input: Hello[world]- what is this?              Output: Hello- what is this?