title在html中属于特殊的节点元素.因为它可以使用document.getElementsByTagName("title")[0]来获取网页的title标签,但却无法用document.getElementsByTagName("title")[0].innerHtml用更改它的值。经测试原生js有两种方式可以修改，jQuery中也能简单设置。不清楚的小伙伴们可以了解一下。
innerText方式
通过console.log(document.getElementsByTagName("title")[0]),发现能打印出
标签，标签里面只有文字节点，故猜测只能识别TextNode，所以用innerText方式设置title的值，果然成功了。</p>
<pre>
document.getElementsByTagName("title")[0].innerText='需要设置的值';</pre>
<p>document.title方式<br/>
</p>
<p>经过测试，还可通过document.title设置title的值。</p>
<pre>
console.log(document.title);#可以获取title的值。
document.title='需要设置的值';#设置title的值。
</pre>
<p>例子</p>
<pre>
window.onfocus=function(){
document.title='恢复正常了...';
};
window.onblur=function(){
document.title='快回来~页面崩溃了';
};</pre>
<p>我们在浏览器取得了焦点和失去焦点的时候改变title的值，可以发现切换浏览器选项卡的时候，title发生了改变。</p>
<p>jQuery方式<br/>
</p>
<p>当然如果你的项目里面依赖jQuery,可以使用jq的方法设置</p>
<pre>
$('title').html('')
$('title').text('')</pre>
<p>jq中两种方式都可以实现</p>
<p>总结<br/>
</p>
<p>原生js中我们可以通过innerText,document.title两种方式动态修改网页的title.<br/>
</p>
<p>jq中我们可以通过$('title').html('')或者$('title').text('')进行修改。</p>
<p>以上就是JS更改浏览器TITLE的详细方法，感觉有用就收藏一下吧。</p></section>
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