如何使用正则表达式在字符串中找到@username(How find @username in string using regex)

如何使用正则表达式在字符串中找到@username(How find @username in string using regex)

如何使用javascript和regex在给定字符串中找到@username并将它们移动到div？

允许的项目：

@username @user_name

不允许的项目：

@_username // non alphabetical character at the beginning @1username // a number at the beginning @username_ // underscore at the end

我想把它们包装成div。 我尝试了什么： https ： //regex101.com/r/olqjsv/2

How to find @username in given string using javascript and regex and move them to a div ?

Allowed Items:

@username @user_name

Not Allowed Items:

@_username // non alphabetical character at the beginning @1username // a number at the beginning @username_ // underscore at the end

I want to wrap them in a div. What i tried: https://regex101.com/r/olqjsv/2

最满意答案

使用具有特定正则表达式模式的String.prototype.replace（）函数的解决方案：

var str = "@username  @username_   @user_name @1username",
    result = str.replace(/@[a-z]\w+[a-z]\b/gi, "<div>$&</div>");

console.log(result); 
  
 
 
 $& - 特殊替换模式，指向匹配的子字符串 
The solution using String.prototype.replace() function with specific regex pattern:
 
 
 
  
  
var str = "@username  @username_   @user_name @1username",
    result = str.replace(/@[a-z]\w+[a-z]\b/gi, "<div>$&</div>");

console.log(result); 
  
 
 
$& - special replacement pattern, points to the matched substring