Question

我目前正在学习JavaScript，我遇到以下问题。是否有可能只从包含子项的div中获取文本？我设法让它只适用于div的孩子们面前的文字。

PS：我想提一下，我正在尝试使用纯JavaScript实现这一目标。

＆＃13;

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

＆＃13;

<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>

＆＃13;

Answer 1

这不是很干净的方式，但尝试这样的事情：

＆＃13;

//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>';
}

＆＃13;

<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>

＆＃13;

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： -

[＆＃34;我的名字是＆＃34;，＆＃34; John Doe＆＃34;，＆＃34;我来自德克萨斯州＆＃34;]

[＆＃34;我的名字是＆＃34;，＆＃34; Jean Frye＆＃34;，＆＃34;我来自阿拉巴马州＆＃34;]

这可能会成功。

Answer 3

您可以使用innerText仅获取所选元素的文字。

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>

有关详情，请参阅MDN article on innerText

如何从包含子项的div中获取文本

3 个答案: