如何使用JavaScript获得没有HTML元素的纯文本?

问题描述

我有1按钮和HTML中的一些文本，如下所示:

I have the 1 button and some text in my HTML like the following:

function get_content(){
   // I don't know how to do in here!!!
}

<input type="button" onclick="get_content()" value="Get Content"/>
<p id='txt'>
<span class="A">I am</span>
<span class="B">working in </span>
<span class="C">ABC company.</span>
</p>

当用户单击按钮时，<p id='txt'>中的内容将成为以下预期结果:

When the user clicks the button, the content in the <p id='txt'> will become the follow expected result:

<p id='txt'>
// All the HTML element within the <p> will be disappear
I am working in ABC company.
</p>

有人可以帮我编写JavaScript函数吗?

Can anyone help me how to write the JavaScript function?

谢谢.

推荐答案

[2017-07-25]因为尽管这是一个非常棘手的解决方案，但它仍然是公认的答案，因此我将的代码添加到其中，我自己留下的代码就是一个不好的例子.

[2017-07-25] since this continues to be the accepted answer, despite being a very hacky solution, I'm incorporating Gabi's code into it, leaving my own to serve as a bad example.

// my hacky approach:
function get_content() {
  var html = document.getElementById("txt").innerHTML;
  document.getElementById("txt").innerHTML = html.replace(/<[^>]*>/g, "");
}
// Gabi's elegant approach, but eliminating one unnecessary line of code:
function gabi_content() {
  var element = document.getElementById('txt');
  element.innerHTML = element.innerText || element.textContent;
}
// and exploiting the fact that IDs pollute the window namespace:
function txt_content() {
  txt.innerHTML = txt.innerText || txt.textContent;
}

.A {
  background: blue;
}

.B {
  font-style: italic;
}

.C {
  font-weight: bold;
}

<input type="button" onclick="get_content()" value="Get Content (bad)" />
<input type="button" onclick="gabi_content()" value="Get Content (good)" />
<input type="button" onclick="txt_content()" value="Get Content (shortest)" />
<p id='txt'>
  <span class="A">I am</span>
  <span class="B">working in </span>
  <span class="C">ABC company.</span>
</p>

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