给大家讲一个用javascript动态修改浏览器标题（title）方法和技巧，需要的朋友把代码测试吧。
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><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>document.getElementsByTagName("title")[0].innerText = '需要设置的值';</pre><div class="contentsignin">登录后复制</div></div><p><span style="font-size: 18px;"><strong>document.title方式</strong></span></p><p>经过测试，还可通过document.title 设置title的值。</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>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><div class="contentsignin">登录后复制</div></div><p>例子：</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>window.onfocus = function () {
document.title = '恢复正常了...';
};
window.onblur = function () {
document.title = '快回来~页面崩溃了';
};</pre><div class="contentsignin">登录后复制</div></div><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><span style="font-size: 18px;"><strong>jQuery方式</strong></span><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><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>$('title').html('')
$('title').text('')</pre><div class="contentsignin">登录后复制</div></div><p>jq中两种方式都可以实现</p>
<p><span style="font-size: 18px;"><strong>总结</strong></span><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javascript动态修改浏览器标题（title） 的详细方法，更多相关教程请访问<a href="http://www.php.cn/course/list/17.html" target="_blank">JavaScript视频教程</a>！</p>
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