javascript - 如何将所有子元素包装在一个类中？

Question

我有一个函数，可以分割元素中的所有行并将它们包装在 <div> 中。例如，如果我有一个如下所示的元素:

<div class="test">
  Lorem Khaled Ipsum is a major key to success. I’m up to something. To be successful you’ve
  got to work hard, to make history, simple, you’ve got to make it. I told you all this before, when 
  you have a swimming pool, do not use chlorine, use salt water, the healing, salt water is the healing. 
  The key to more success is to get a massage once a week, very important, major key, cloth talk. 
  Wraith talk. Don’t ever play yourself. 
</div>

然后它会像这样包装所有行:

<div class="test">
  <div class="line_wrap">Lorem Khaled Ipsum is a major key to success. I’m up to something. To be successful you’ve</div>
  <div class="line_wrap">got to work hard, to make history, simple, you’ve got to make it. I told you all this before, when </div> 
  <div class="line_wrap">you have a swimming pool, do not use chlorine, use salt water, the healing, salt water is the healing. </div> 
  <div class="line_wrap">The key to more success is to get a massage once a week, very important, major key, cloth talk. </div> 
  <div class="line_wrap">Wraith talk. Don’t ever play yourself.</div> 
</div>

我遇到的问题是我正在寻找一种方法将这些项目包装在另一个 <div> 中像:

<div class="test">
  <div class="wrap">
    <div class="line_wrap">Lorem Khaled Ipsum is a major key to success. I’m up to something. To be successful you’ve</div>
    <div class="line_wrap">got to work hard, to make history, simple, you’ve got to make it. I told you all this before, when </div> 
    <div class="line_wrap">you have a swimming pool, do not use chlorine, use salt water, the healing, salt water is the healing. </div> 
    <div class="line_wrap">The key to more success is to get a massage once a week, very important, major key, cloth talk. </div> 
    <div class="line_wrap">Wraith talk. Don’t ever play yourself.</div> 
  </div>
</div>

到目前为止，我已经尝试过 wrapall使用.each函数，但它会进行 4 层包装，如果我有多个元素，它将获取所有元素并将它们放入第一个元素中。

我的问题是:如何将所有子项包装到 <div> 中？

我的工作代码:

function wrapNewLines(targetSelector, wrapEl = 'span', wrapClass = 'new-line') {
    const content = document.querySelectorAll(targetSelector)
    content.forEach(section => {
      let sectionWidth = section.getBoundingClientRect().width
      let words = section.innerText.split(/( )/g)
      section.innerHTML = ''
      words.forEach(word => {
        section.innerHTML += `<span>${word}</span>`
      })
      let lines = []
      let line = []
      let lineWidth = 0
      let spans = section.querySelectorAll('span')
      spans.forEach((span, i) => {
        let spanWidth = span.getBoundingClientRect().width
        if (lineWidth + spanWidth <= sectionWidth - 1) {
          line.push(span)
          lineWidth += spanWidth
        } else {
          lines.push(line)
          line = []
          lineWidth = 0
          line.push(span)
          lineWidth += spanWidth
        }
      })
      if (line.length) lines.push(line)
      let newLines = lines
        .map(
          line =>
            `<${wrapEl} class=${wrapClass}>${line
              .map(span => span.innerText)
              .join('')}</${wrapEl}>`
        )
        .join('')
      section.innerHTML = newLines
    })
}    
wrapNewLines('.emails .multi-items .message-contain #content','div', 'line_wrap');


$.each($('.message-contain'), function(i, message) { 

	var size = 6; //define how many elements you want in each wrapper
	var items = $(message).find('.line_wrap'); //the collection of all your items
	var container; //this will be used to add the items in it.
  
  $.each(items, function(i, item) { 
  
    //this expression checks if we need to create a new container
    if (i % size === 0) {
      container = $('<div class="wrapped"></div>'); //create a new container
      $(message).append(container); //add the new container to the body
    }

    $(item).appendTo(container); //add the item to the container
   });
});
$(".emails .multi-items #content").each(function (i) {
  $('.line_wrap').children().wrapAll("<div class='test'></div>");
});

.wrapped {background:black;color:white}
.line_wrap {border:1px solid #aa0000}
#content {margin:35px}
.test {color:yellow}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="emails">
<ul class="multi-items">
  <div class="message-contain">
      <div id="content">
                    1 -  The first of the month is coming, we have to get money, we have no choice. It cost money to eat and they don’t want you to eat. Egg whites, turkey sausage, wheat toast, water. Of course they don’t want us to eat our breakfast, so we are going to enjoy our breakfast. They key is to have every key, the key to open every door. To succeed you must believe. When you believe, you will succeed. They don’t want us to eat.
Another one. Major key, don’t fall for the trap, stay focused. It’s the ones closest to you that want to see you fail. To be successful you’ve got to work hard, to make history, simple, you’ve got to make it. The key to success is to keep your head above the water, never give up. Stay focused. They don’t want us to eat. The key is to drink coconut, fresh coconut, trust me. Give thanks to the most high. Surround yourself with angels, positive energy, beautiful people, beautiful souls, clean heart, angel. Congratulations, you played yourself.
Major key, don’t fall for the trap, stay focused. It’s the ones closest to you that want to see you fail. They never said winning was easy. Some people can’t handle success, I can. Another one. You smart, you loyal, you a genius. Look at the sunset, life is amazing, life is beautiful, life is what you make it. The key to success is to keep your head above the water, never give up. They don’t want us to eat. Put it this way, it took me twenty five years to get these plants, twenty five years of blood sweat and tears, and I’m never giving up, I’m just getting started.
      </div>
  </div>
<div class="message-contain">
      <div id="content">
                    2 - The key to more success is to get a massage once a week, very important, major key, cloth talk. Eliptical talk. Every chance I get, I water the plants, Lion! Egg whites, turkey sausage, wheat toast, water. Of course they don’t want us to eat our breakfast, so we are going to enjoy our breakfast. The other day the grass was brown, now it’s green because I ain’t give up. Never surrender. Put it this way, it took me twenty five years to get these plants, twenty five years of blood sweat and tears, and I’m never giving up, I’m just getting started.
      </div>
  </div>
</ul>
</div>

有问题的部分:

$(".emails .multi-items #content").each(function (i) {
  $('.line_wrap').children().wrapAll("<div class='test'></div>");
});

Answer 1

您可以通过仅定位 .line_wrap 来解决此问题当前 .wrapped 内的 div我们正在循环遍历的 div .each()方法。这是需要的，这样我们就不会包装所有 .line_wrap立即进入所有.wrapped分区:

$(".emails .multi-items .wrapped").each(function (i) {
    $('.line_wrap', this).wrapAll("<div class='test'></div>");
});

工作演示:

function wrapNewLines(targetSelector, wrapEl = 'span', wrapClass = 'new-line') {
  const content = document.querySelectorAll(targetSelector)
  content.forEach(section => {
    let sectionWidth = section.getBoundingClientRect().width
    let words = section.innerText.split(/( )/g)
    section.innerHTML = ''
    words.forEach(word => {
      section.innerHTML += `<span>${word}</span>`
    })
    let lines = []
    let line = []
    let lineWidth = 0
    let spans = section.querySelectorAll('span')
    spans.forEach((span, i) => {
      let spanWidth = span.getBoundingClientRect().width
      if (lineWidth + spanWidth <= sectionWidth - 1) {
        line.push(span)
        lineWidth += spanWidth
      } else {
        lines.push(line)
        line = []
        lineWidth = 0
        line.push(span)
        lineWidth += spanWidth
      }
    })
    if (line.length) lines.push(line)
    let newLines = lines
      .map(
        line =>
        `<${wrapEl} class=${wrapClass}>${line
              .map(span => span.innerText)
              .join('')}</${wrapEl}>`
      )
      .join('')
    section.innerHTML = newLines
  })
}
wrapNewLines('.emails .multi-items .message-contain #content', 'div', 'line_wrap');

$.each($('.message-contain'), function(i, message) {
  var size = 6; //define how many elements you want in each wrapper
  var items = $(message).find('.line_wrap'); //the collection of all your items
  var container; //this will be used to add the items in it.
  $.each(items, function(i, item) {
    //this expression checks if we need to create a new container
    if (i % size === 0) {
      container = $('<div class="wrapped"></div>'); //create a new container
      $(message).append(container); //add the new container to the body
    }

    $(item).appendTo(container); //add the item to the container
  });
});

$(".emails .multi-items .wrapped").each(function (i) {
    $('.line_wrap', this).wrapAll("<div class='test'></div>");
});

.wrapped {
  background: black;
  color: white
}

.line_wrap {
  border: 1px solid #aa0000;
  padding: 4px 8px;
}

#content {
  margin: 35px
}

.test {
  color: yellow
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="emails">
  <ul class="multi-items">
    <div class="message-contain">
      <div id="content">
        1 - The first of the month is coming, we have to get money, we have no choice. It cost money to eat and they don’t want you to eat. Egg whites, turkey sausage, wheat toast, water. Of course they don’t want us to eat our breakfast, so we are going to enjoy
        our breakfast. They key is to have every key, the key to open every door. To succeed you must believe. When you believe, you will succeed. They don’t want us to eat. Another one. Major key, don’t fall for the trap, stay focused. It’s the ones
        closest to you that want to see you fail. To be successful you’ve got to work hard, to make history, simple, you’ve got to make it. The key to success is to keep your head above the water, never give up. Stay focused. They don’t want us to eat.
        The key is to drink coconut, fresh coconut, trust me. Give thanks to the most high. Surround yourself with angels, positive energy, beautiful people, beautiful souls, clean heart, angel. Congratulations, you played yourself. Major key, don’t fall
        for the trap, stay focused. It’s the ones closest to you that want to see you fail. They never said winning was easy. Some people can’t handle success, I can. Another one. You smart, you loyal, you a genius. Look at the sunset, life is amazing,
        life is beautiful, life is what you make it. The key to success is to keep your head above the water, never give up. They don’t want us to eat. Put it this way, it took me twenty five years to get these plants, twenty five years of blood sweat
        and tears, and I’m never giving up, I’m just getting started.
      </div>
    </div>
    <div class="message-contain">
      <div id="content">
        2 - The key to more success is to get a massage once a week, very important, major key, cloth talk. Eliptical talk. Every chance I get, I water the plants, Lion! Egg whites, turkey sausage, wheat toast, water. Of course they don’t want us to eat our breakfast,
        so we are going to enjoy our breakfast. The other day the grass was brown, now it’s green because I ain’t give up. Never surrender. Put it this way, it took me twenty five years to get these plants, twenty five years of blood sweat and tears,
        and I’m never giving up, I’m just getting started.
      </div>
    </div>
  </ul>
</div>