Javascript camelCase to Regular Form [英] Javascript camelCase to Regular Form

问题描述

我一直在尝试使用JavaScript regex命令将 thisString 之类的内容转换为此字符串但是我得到的最接近的是替换一个字母，导致类似 Thi String 或这个tring 。有什么想法？

I've been trying to get a JavaScript regex command to turn something like thisString into This String but the closest I've gotten is replacing a letter, resulting in something like Thi String or This tring. Any ideas?

为了澄清我可以处理大写字母的简单性，我对RegEx并不是那么强大，并且分裂 somethingLikeThis 进入类似这样的东西是我遇到麻烦的地方。

To clarify I can handle the simplicity of capitalizing a letter, I'm just not as strong with RegEx, and splitting somethingLikeThis into something Like This is where I'm having trouble.

推荐答案

"thisStringIsGood"
    // insert a space before all caps
    .replace(/([A-Z])/g, ' $1')
    // uppercase the first character
    .replace(/^./, function(str){ return str.toUpperCase(); })

显示

This String Is Good

(function() {

  var $textbox = $('#textbox'),
    $result = $('#result'),
    splitter = function() {
      $result.html($textbox.val()
        // insert a space before all caps
        .replace(/([A-Z])/g, ' $1')
        // uppercase the first character
        .replace(/^./, function(str) {
          return str.toUpperCase();
        }));
    };

  $textbox.on('input', splitter);
  
  splitter();
}());

#result {
  margin-top: 10px;
  padding-top: 10px;
  border-top: solid 1px #c3c3c3;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<div>
  Text to split
  <input id="textbox" value="thisStringIsGood" />
</div>

<div id="result"></div>

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