使用 jQuery text() 并替换 + 保留换行符

Question

我用

$("#test").html($("#test").text().replace(/([a-zA-Z]+[.,]? ){50}/, 
  function(x) { return x + "... <p>new content</p> ... "; }));

在50字后添加一些内容。 在这种情况下，如何保留完整内容的原始换行符？

我试过这个

替代 jQuery text() 函数https://www.sitepoint.com/jquery-text-function/

但没有成功。

例子：

https://jsfiddle.net/3wkxzpo0/

 $("#test").html($("#test").text().replace(/([a-zA-Z]+[.,]? ){50}/, function(x) { return x + "... <p style=\\"background:red\\">new content</p> ... "; }));

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <div id="test"> Hallo, <br /><br />Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et duo dolores et ea rebum. Stet clita kasd gubergren, no sea <a href="/example.php">test</a> takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur <img src="sdfsdf">sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo <br /><br /> Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. <br /><br /> Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla facilisis at vero eros et accumsan et iusto odio dignissim qui blandit praesent luptatum zzril delenit augue duis dolore te feugait nulla facilisi. Lorem ipsum dolor sit amet. </div>

Answer 1

这是一个普通的 JS 解决方案，它遍历元素的 childNodes，跟踪每个textNode 中的字数，并在达到特定字数时插入所需的元素。

var test = document.getElementById('test'), childNodes = test.childNodes,
    wordCount = 0, newHTML = [], maxWords = 50, toInsert = '&nbsp;<b>[50]</b>&nbsp;',
  i = 0, node = null, words = null, inserted = false;

for(i=0; i<childNodes.length; i++) {
  node = childNodes[i];
  if(node.nodeType !== 3) { // not a text node, append
    newHTML.push(node.outerHTML);
  }
  else { // is a text node, append till maxWords
    if(inserted) {
      newHTML.push(node.textContent);
    }
    else {
      words = node.textContent.replace(/^\s+/g, '').replace(/\s+$/g, '').split(/[\s\t\n+]/g);
      words = words.filter(function(_x) {
        return _x !== '';
      });
      if(wordCount + words.length < maxWords) {
        newHTML.push(node.textContent);
      }
      else {
        newHTML.push(words.slice(0, maxWords - wordCount).join(' '));
        newHTML.push(toInsert);
        newHTML.push(words.slice(maxWords - wordCount).join(' '));
        inserted = true;
      }
      wordCount += words.length;
    }
  }
}
test.innerHTML = newHTML.join('');

演示： https : //jsfiddle.net/5t6kq02g/1/

Answer 2

尝试 -

$("#test").html($("#test").html().replace(/([a-zA-Z]+[.,]? ){50}/, function(x) { return x + "... <p style=\"background:red\">new content</p> ... "; }));

Answer 3

这有效。 . . 只需将$("#test").text()更改$("#test").html()

https://jsfiddle.net/vq8yf9u9/2/

 $("#test").html($("#test").html().replace(/([a-zA-Z=\\/<>".]+[.,]? +){50}/, function(x) { return x + "... <p style=\\"background:red\\">new content</p> ... "; }));

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <div id="test"> Hallo, <br /><br />Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et duo dolores et ea rebum. Stet clita kasd gubergren, no sea <a href="/example.php">test</a> takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur <img src="sdfsdf">sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo <br /><br /> Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. <br /><br /> Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla facilisis at vero eros et accumsan et iusto odio dignissim qui blandit praesent luptatum zzril delenit augue duis dolore te feugait nulla facilisi. Lorem ipsum dolor sit amet. </div>