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介绍三个不常用的HTML元素：<details>、<summary>、<dialog>

PHP中文网
Release： 2017-03-28 13:31:25
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前面的话

　　HTML5不仅新增了语义型区块级元素及表单类元素，也新增了一些其他的功能性元素，这些元素由于浏览器支持等各种原因，并没有被广泛使用

文档描述

　　

主要用于描述文档或文档某个部分的细节，与配合使用可以为
定义标题。标题是可见的，用户点击标题时，显示出details

　　[注意]这两个标签只有chrome和opera支持

　　该标签仅有一个open属性，用来定义details是否可见(默认为不可见状态)

<details>
    <summary>Copyright 2015.</summary>
    <p>php中文网</p>
</details>
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对话框

　　

标签用来定义对话框或窗口，且该对话框位于窗口的水平居中位置

　　该标签只有一个open属性，用来定义对话框是否可见(默认为不可见)

　　[注意]只有chrome和opera支持

<button>显示对话框</button>
<dialog>我是对话框的内容</dialog>
<script>
var oBtn = document.getElementsByTagName(&#39;button&#39;)[0];
var oDia = document.getElementsByTagName(&#39;dialog&#39;)[0]; 
oBtn.onclick = function(){
  console.log(oDia.getAttribute(&#39;open&#39;))
  if(!oDia.getAttribute(&#39;open&#39;)){
    oDia.setAttribute(&#39;open&#39;,&#39;open&#39;);
    this.innerHTML =&#39;隐藏文本框&#39;;
  }else{
    oDia.removeAttribute(&#39;open&#39;);
    this.innerHTML = &#39;显示文本框&#39;;
  }
}
</script>
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相关文章：

HTML5每日一练之details展开收缩标签的应用

在H5中如何使用details元素和summary元素

Related labels：
dialog html
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