Question

我发现了类似的问题，由于这些问题，我认为我已经接近了，但这仍然没有做我想要的。（JQuery已经在这个项目中使用，所以我也在使用它。）

保存的代码段有效。如果我注释掉当前的替换行并取消评论当前评论的那一行，它似乎什么都不做。它应该找到文本中的第一个maxWordschars字符，以及直到下一个空格的任何字符，并将字符串替换为已找到的字符。

  $('.practice').each(function(){
      var maxWordschars = 34;
      var strippedString = $(this).text().trim();        
      var regexpattern = new RegExp("/^(.{" + maxWordschars + "}[^\s]*).*/");
      var newString = strippedString.replace(/^(.{34}[^\s]*).*/, "$1");
      //var newString = strippedString.replace(regexpattern, "$1");
      if (newString != strippedString){
        newString += "...";
      }      
      $(this).text(newString);
  });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="practice">
  Let this be a long string of text that my script has to deal with to make it fit.
</div>
<br>
<div class="practice">
  Allow this considerably longer paragraph of text with multisylable enunciations to further quantify the effectiveness of my script
</div>

Answer 1

  $('.practice').each(function(){
      var maxWordschars = 34;
      var strippedString = $(this).text().trim();        
      var regexpattern = new RegExp("^(.{" + maxWordschars + "}\\S*).*");
      //var newString = strippedString.replace(/^(.{34}[^\s]*).*/, "$1");
      var newString = strippedString.replace(regexpattern, "$1");
      if (newString != strippedString){
        newString += "...";
      }      
      $(this).text(newString);
  });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="practice">
  Let this be a long string of text that my script has to deal with to make it fit.
</div>
<br>
<div class="practice">
  Allow this considerably longer paragraph of text with multisylable enunciations to further quantify the effectiveness of my script
</div>

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如何使用变量在Javascript中构造正则表达式字符串

1 个答案: