如何从其中包含 children 的 div 中获取文本

Question

我目前正在学习JavaScript，但遇到以下问题。是否可以仅从 div 中获取其中包含 children 的文本？我设法使其仅适用于出现在 div 的 children.

之前的文本

PS：我想提一下，我试图仅使用纯 JavaScript.

来实现这一点

var Class = document.querySelectorAll('div,b');
for (var i=0; i < Class.length; i++){
   console.log(Class[i].childNodes[0].nodeValue);
}

<div class="Bio">
My name is <b>John Doe</b> and I am coming from Texas
</div>

<div class="Bio">
My name is <b>Jean Frye</b> and I am coming from Alabama
</div>

Answer 1

您可以使用 innerText 仅获取所选元素的文本。

var Class = document.querySelectorAll('div');
for (var i=0; i < Class.length; i++){
   console.log(Class[i].innerText);
}

<div class="Bio">
My name is <b>John Doe</b> and I am coming from Texas
</div>

<div class="Bio">
My name is <b>Jean Frye</b> and I am coming from Alabama
</div>

有关详细信息，请参考 MDN article on innerText

Answer 2

var Class = document.querySelectorAll('div');

for (var i=0; i < Class.length; i++){
   var children = [];
   var boldText = Class[i].querySelectorAll('b')[0].innerText;
   var otherText = Class[i].innerText.split(Class[i].querySelectorAll('b')[0].innerText)

   children.push(otherText[0]);
   children.push(boldText);
   children.push(otherText[1]);
   
   console.log(children);
}

输出：-

["My name is ", "John Doe", " and I am coming from Texas"]

["My name is ", "Jean Frye", " and I am coming from Alabama"]

这可能会成功。

Answer 3

这不是很干净的方式，但请尝试这样的事情：

//get all div's with Bio css class (You can change it)
var Class = document.querySelectorAll('.Bio');
var sp=document.getElementById('res');
var arr=[]; //I put result into array so You can use it where You need
for (var i=0; i < Class.length; i++) {
   for(var x=0;x<Class[i].childNodes.length;x++) {
     if(Class[i].childNodes[x].nodeValue==null) {
        //get value, innerHTML, from <b>
      //res.innerHTML+=Class[i].childNodes[x].innerHTML+'<br>';
        arr.push(Class[i].childNodes[x].innerHTML);
        } else {
        //get div innerHTML (before,after every child node
        //res.innerHTML+=Class[i].childNodes[x].nodeValue+'<br>';
        arr.push(Class[i].childNodes[x].nodeValue);
        }
   }
}
//show result into that span
for(var i=0;i<arr.length;i++) {
res.innerHTML+=arr[i]+'<br>';
}

<div class="Bio">
My name is <b>John Doe</b> and I am coming from Texas
</div>

<div class="Bio">
My name is <b>Jean Frye</b> and I am coming from Alabama
</div>
<br><br>
<!-- I use this span to show result -->
<span id="res"></span>

如何从其中包含 children 的 div 中获取文本

How to get the text from a div which has children in it

javascript

children

nodevalue

child-nodes