使用 jQuery text() 並替換 + 保留換行符

Question

我用

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

在50字后添加一些內容。 在這種情況下，如何保留完整內容的原始換行符？

我試過這個

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

但沒有成功。

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

這是一個普通的 JS 解決方案，它遍歷元素的 childNodes，跟蹤每個textNode 中的字數，並在達到特定字數時插入所需的元素。

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

嘗試 -

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

Answer 3

這有效。 . . 只需將$("#test").text()更改$("#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>