VueJS是一個強大的JavaScript框架，它廣泛用于構建現代Web應用程序。VueJS的處理能力取決于它的組件架構。Vue組件可以被多次使用，這讓開發者可以節省時間和精力。
在Vue中，可以在組件內部使用<head>標簽來定義頁面的元數據，例如
元素或<meta>標簽。但是，當您使用多個相似的組件時，這將會成為一個問題：每個<code><head></code>標簽都需要定義相同的內容。這不僅很繁瑣，而且很容易引起錯誤。幸運的是，Vue提供了一種稱為Head Mixin的特殊方法。</p><pre>// headMixin.js
export default {
// 組件掛載的時候，將head合并到全局Vue實例
mounted() {
const { head } = this.$options;
if (head) {
this.$store.commit('setHead', head);
}
},
// 組件移除的時候，將head從全局Vue實例中移除
beforeDestroy() {
const { head } = this.$options;
if (head) {
this.$store.commit('removeHead', head);
}
},
}
// main.js
import headMixin from '@/mixins/headMixin';
Vue.mixin(headMixin);</pre><p>以上代碼給出了用于擴展Vue組件的頭組件的Mixin的定義。我們將Mixin的邏輯分為兩部分：mounted和beforeDestroy。當組件被掛載時，我們將定義的<code><head></code>標簽合并到全局Vue實例上。隨著時間的推移，我們可能會在應用程序的多個部分中使用多個類似于此的組件。</p><p>因此，我們將<code><head></code>標簽定義添加到全局Vue實例中，可以確保每個具有這個Mixin的組件都可以訪問相同的元數據。然后，當組件被銷毀時，我們從全局Vue實例中移除<code><head></code>標簽定義。這樣做，可以保證沒有沒有用的<code><head></code>標簽定義存在于我們的應用程序中。</p></div><div id="pjfnpnz" class="share"></div><div id="jfdl7lz" class="Prev_Next"><div id="zjxbp7x" class="box">上一篇<a href="http://www.lofty888.cn/post/1193888.html">html怎么給文字設置寬度</a></div><div id="xhrpvxd" class="box">下一篇<a href="http://www.lofty888.cn/post/1217525.html">grafana simple json</a></div></div></div><div id="bjfzjtr" class="related related-list"><h5>相關文章</h5><ul><li><a href="http://www.lofty888.cn/post/1660108.html">vue美化插件</a><span>10-07</span></li><li><a href="http://www.lofty888.cn/post/1660113.html">vue美化教程</a><span>10-07</span></li><li><a href="http://www.lofty888.cn/post/1660115.html">vue美化界面</a><span>10-07</span></li><li><a href="http://www.lofty888.cn/post/1660122.html">vue美化組件</a><span>10-07</span></li><li><a href="http://www.lofty888.cn/post/1660125.html">vue美化背景</a><span>10-07</span></li><li><a href="http://www.lofty888.cn/post/1660127.html">vue美化頁面</a><span>10-07</span></li><li><a href="http://www.lofty888.cn/post/1661314.html">vue聊天原理</a><span>10-05</span></li><li><a href="http://www.lofty888.cn/post/1661312.html">vue聊天功能</a><span>10-05</span></li><li><a href="http://www.lofty888.cn/post/1661318.html">vue聊天發送</a><span>10-05</span></li><li><a href="http://www.lofty888.cn/post/1661322.html">vue聊天套路</a><span>10-05</span></li><li><a href="http://www.lofty888.cn/post/1661325.html">vue聊天如何發送文件</a><span>10-05</span></li><li><a href="http://www.lofty888.cn/post/1661328.html">vue聊天實例</a><span>10-05</span></li><li><a href="http://www.lofty888.cn/post/1661336.html">vue聊天室前端</a><span>10-05</span></li><li><a href="http://www.lofty888.cn/post/1661340.html">vue聊天室彈框</a><span>10-05</span></li><li><a href="http://www.lofty888.cn/post/1661342.html">vue聊天室頁面</a><span>10-05</span></li><li><a href="http://www.lofty888.cn/post/1275270.html">vue引用導航欄</a><span>06-24</span></li><li><a href="http://www.lofty888.cn/post/281031.html">用vue開發</a><span>03-13</span></li><li><a href="http://www.lofty888.cn/post/1255937.html">vue 獲取static數據</a><span>06-19</span></li><li><a href="http://www.lofty888.cn/post/1254896.html">vue 流程設計器</a><span>06-20</span></li><li><a href="http://www.lofty888.cn/post/1138198.html">max vue配置</a><span>05-27</span></li><li><a href="http://www.lofty888.cn/post/1136567.html">java vue項目</a><span>05-30</span></li><li><a href="http://www.lofty888.cn/post/1248787.html">vue input焦點事件</a><span>06-20</span></li><li><a href="http://www.lofty888.cn/post/1137239.html">js與vue</a><span>05-29</span></li><li><a href="http://www.lofty888.cn/post/1209225.html">vue geturlparam</a><span>06-07</span></li><li><a href="http://www.lofty888.cn/post/1253741.html">vue 引入其他js</a><span>06-21</span></li><li><a href="http://www.lofty888.cn/post/1266691.html">vue局部引入swiper</a><span>06-09</span></li><li><a href="http://www.lofty888.cn/post/1138058.html">mac vue啟動</a><span>05-28</span></li><li><a href="http://www.lofty888.cn/post/1265545.html">vue安裝和配置</a><span>06-10</span></li><li><a href="http://www.lofty888.cn/post/1205778.html">vue deep穿透</a><span>06-13</span></li><li><a href="http://www.lofty888.cn/post/1266277.html">vue對typescript支持</a><span>06-09</span></li></ul></div></div></div></div><div class="fzjh5df" id="footer"><div id="dp75llz" class="copyright"><div id="nvbzlhv" class="container"><p>老白網絡 (http://www.lofty888.cn/) 前端 后端 zblog主題.<a href="http://www.lofty888.cn/sitemap/post.html">網站地圖</a><a href="http://www.lofty888.cn/sitemap/post.xml">xml</a></p><span>Powered By Z-BlogPHP</span></div></div></div><div id="hbrnphj" class="bottom_tools"><a id="scrollUp" href="javascript:;" title="返回頂部"><i class="fa fa-angle-up"></i></a></div><script type="text/javascript" src="http://cdn.staticfile.org/jquery/2.2.4/jquery.min.js"></script><script src="http://cdn.yzktw.com.cn/zb_users/theme/ydproduct/script/ads.js" type="text/javascript"></script><script src="http://cdn.yzktw.com.cn/zb_users/theme/ydproduct/script/common.min.js" type="text/javascript"></script><script src="http://cdn.staticfile.org/prettify/r298/prettify.min.js" type="text/javascript"></script><script>jQuery(window).load(function(){jQuery("pre").addClass("prettyprint");prettyPrint();});</script><div class="j55xxvz" id="ly_cache" data-id="1209661"></div>
<footer>
<div class="friendship-link">
<p>感谢您访问我们的网站，您可能还对以下资源感兴趣：</p>
<a href="http://www.lofty888.cn/" title="欧美一区二区三区">欧美一区二区三区</a>
<div class="friend-links">
</div>
</div>
</footer>
<script>
(function(){
var bp = document.createElement('script');
var curProtocol = window.location.protocol.split(':')[0];
if (curProtocol === 'https') {
bp.src = 'https://zz.bdstatic.com/linksubmit/push.js';
}
else {
bp.src = 'http://push.zhanzhang.baidu.com/push.js';
}
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(bp, s);
})();
</script>
</body><div id="x9zvx" class="pl_css_ganrao" style="display: none;"><rp id="x9zvx"></rp><form id="x9zvx"><video id="x9zvx"></video></form><th id="x9zvx"><thead id="x9zvx"><em id="x9zvx"><ruby id="x9zvx"></ruby></em></thead></th><pre id="x9zvx"></pre><meter id="x9zvx"></meter><dfn id="x9zvx"><u id="x9zvx"></u></dfn><ruby id="x9zvx"><thead id="x9zvx"></thead></ruby><dfn id="x9zvx"></dfn><progress id="x9zvx"></progress><font id="x9zvx"><meter id="x9zvx"></meter></font><big id="x9zvx"><acronym id="x9zvx"><pre id="x9zvx"><dfn id="x9zvx"></dfn></pre></acronym></big><pre id="x9zvx"><th id="x9zvx"><b id="x9zvx"><mark id="x9zvx"></mark></b></th></pre><form id="x9zvx"></form><th id="x9zvx"></th><menuitem id="x9zvx"></menuitem><dfn id="x9zvx"></dfn><legend id="x9zvx"><dfn id="x9zvx"><u id="x9zvx"><ins id="x9zvx"></ins></u></dfn></legend><label id="x9zvx"></label><div id="x9zvx"><ol id="x9zvx"><style id="x9zvx"><nobr id="x9zvx"></nobr></style></ol></div><form id="x9zvx"><rp id="x9zvx"><address id="x9zvx"><div id="x9zvx"></div></address></rp></form><video id="x9zvx"><small id="x9zvx"><meter id="x9zvx"><span id="x9zvx"></span></meter></small></video><legend id="x9zvx"><dfn id="x9zvx"><u id="x9zvx"><rp id="x9zvx"></rp></u></dfn></legend><big id="x9zvx"><acronym id="x9zvx"><pre id="x9zvx"><dfn id="x9zvx"></dfn></pre></acronym></big><meter id="x9zvx"></meter><dl id="x9zvx"></dl><label id="x9zvx"><rp id="x9zvx"><em id="x9zvx"><meter id="x9zvx"></meter></em></rp></label><small id="x9zvx"><menuitem id="x9zvx"></menuitem></small><dl id="x9zvx"><strong id="x9zvx"></strong></dl><ol id="x9zvx"><i id="x9zvx"></i></ol><th id="x9zvx"><b id="x9zvx"><mark id="x9zvx"><address id="x9zvx"></address></mark></b></th><dfn id="x9zvx"><form id="x9zvx"></form></dfn><span id="x9zvx"></span><tt id="x9zvx"><progress id="x9zvx"></progress></tt><video id="x9zvx"></video><form id="x9zvx"><legend id="x9zvx"><sup id="x9zvx"><label id="x9zvx"></label></sup></legend></form><legend id="x9zvx"><var id="x9zvx"></var></legend><optgroup id="x9zvx"><track id="x9zvx"></track></optgroup><optgroup id="x9zvx"></optgroup><listing id="x9zvx"></listing><big id="x9zvx"><acronym id="x9zvx"><pre id="x9zvx"><dfn id="x9zvx"></dfn></pre></acronym></big><sup id="x9zvx"><label id="x9zvx"></label></sup><listing id="x9zvx"><dfn id="x9zvx"></dfn></listing><pre id="x9zvx"><strike id="x9zvx"><listing id="x9zvx"><optgroup id="x9zvx"></optgroup></listing></strike></pre><optgroup id="x9zvx"></optgroup><optgroup id="x9zvx"></optgroup><small id="x9zvx"></small><legend id="x9zvx"><var id="x9zvx"></var></legend><ins id="x9zvx"><address id="x9zvx"><legend id="x9zvx"><ol id="x9zvx"></ol></legend></address></ins><i id="x9zvx"><strong id="x9zvx"></strong></i><optgroup id="x9zvx"><track id="x9zvx"></track></optgroup><strong id="x9zvx"></strong><ol id="x9zvx"></ol><label id="x9zvx"></label><b id="x9zvx"><mark id="x9zvx"></mark></b><i id="x9zvx"><font id="x9zvx"><th id="x9zvx"><label id="x9zvx"></label></th></font></i><b id="x9zvx"></b><strong id="x9zvx"></strong><legend id="x9zvx"><dfn id="x9zvx"><form id="x9zvx"><rp id="x9zvx"></rp></form></dfn></legend><sup id="x9zvx"><label id="x9zvx"><video id="x9zvx"><em id="x9zvx"></em></video></label></sup><form id="x9zvx"><rp id="x9zvx"><address id="x9zvx"><legend id="x9zvx"></legend></address></rp></form><big id="x9zvx"></big><address id="x9zvx"></address><em id="x9zvx"><meter id="x9zvx"></meter></em><th id="x9zvx"><b id="x9zvx"><progress id="x9zvx"><form id="x9zvx"></form></progress></b></th><dl id="x9zvx"></dl><span id="x9zvx"><thead id="x9zvx"><strong id="x9zvx"><optgroup id="x9zvx"></optgroup></strong></thead></span><span id="x9zvx"><i id="x9zvx"><strong id="x9zvx"><dfn id="x9zvx"></dfn></strong></i></span><progress id="x9zvx"></progress><p id="x9zvx"><var id="x9zvx"></var></p><div id="x9zvx"><ol id="x9zvx"></ol></div><dfn id="x9zvx"><u id="x9zvx"></u></dfn><legend id="x9zvx"><var id="x9zvx"><u id="x9zvx"><rp id="x9zvx"></rp></u></var></legend><dl id="x9zvx"></dl><legend id="x9zvx"><dfn id="x9zvx"><form id="x9zvx"><rp id="x9zvx"></rp></form></dfn></legend><acronym id="x9zvx"><legend id="x9zvx"></legend></acronym><progress id="x9zvx"><acronym id="x9zvx"></acronym></progress><div id="x9zvx"><ol id="x9zvx"></ol></div><meter id="x9zvx"></meter><small id="x9zvx"></small><rp id="x9zvx"></rp><dfn id="x9zvx"></dfn><ins id="x9zvx"></ins><label id="x9zvx"></label><sup id="x9zvx"><style id="x9zvx"><video id="x9zvx"><small id="x9zvx"></small></video></style></sup><sup id="x9zvx"><label id="x9zvx"><video id="x9zvx"><em id="x9zvx"></em></video></label></sup><label id="x9zvx"></label><em id="x9zvx"><menuitem id="x9zvx"></menuitem></em><nobr id="x9zvx"></nobr><ol id="x9zvx"></ol><tt id="x9zvx"></tt><thead id="x9zvx"><big id="x9zvx"><dl id="x9zvx"><pre id="x9zvx"></pre></dl></big></thead><ol id="x9zvx"></ol><listing id="x9zvx"><dfn id="x9zvx"><menuitem id="x9zvx"><sub id="x9zvx"></sub></menuitem></dfn></listing><output id="x9zvx"><thead id="x9zvx"></thead></output><b id="x9zvx"><mark id="x9zvx"></mark></b><ol id="x9zvx"></ol><optgroup id="x9zvx"><output id="x9zvx"><sub id="x9zvx"><thead id="x9zvx"></thead></sub></output></optgroup><sup id="x9zvx"></sup><strong id="x9zvx"></strong><u id="x9zvx"><ins id="x9zvx"><address id="x9zvx"><legend id="x9zvx"></legend></address></ins></u><b id="x9zvx"><mark id="x9zvx"></mark></b><span id="x9zvx"><rp id="x9zvx"><legend id="x9zvx"><ol id="x9zvx"></ol></legend></rp></span><meter id="x9zvx"></meter><optgroup id="x9zvx"></optgroup><ins id="x9zvx"><address id="x9zvx"><legend id="x9zvx"><sup id="x9zvx"></sup></legend></address></ins><em id="x9zvx"></em><strong id="x9zvx"><track id="x9zvx"></track></strong><strong id="x9zvx"><ruby id="x9zvx"></ruby></strong><mark id="x9zvx"><form id="x9zvx"><legend id="x9zvx"><dfn id="x9zvx"></dfn></legend></form></mark><dfn id="x9zvx"><form id="x9zvx"></form></dfn><sup id="x9zvx"><label id="x9zvx"></label></sup><nobr id="x9zvx"></nobr><dfn id="x9zvx"><output id="x9zvx"></output></dfn><label id="x9zvx"><strong id="x9zvx"></strong></label><strong id="x9zvx"><th id="x9zvx"><tt id="x9zvx"><mark id="x9zvx"></mark></tt></th></strong><div id="x9zvx"></div><thead id="x9zvx"><dl id="x9zvx"></dl></thead><label id="x9zvx"></label><listing id="x9zvx"><small id="x9zvx"></small></listing><style id="x9zvx"></style><ins id="x9zvx"><address id="x9zvx"></address></ins><strong id="x9zvx"></strong><b id="x9zvx"></b><ruby id="x9zvx"></ruby><strike id="x9zvx"><label id="x9zvx"></label></strike><small id="x9zvx"></small><form id="x9zvx"><p id="x9zvx"><var id="x9zvx"><label id="x9zvx"></label></var></p></form><ins id="x9zvx"><font id="x9zvx"></font></ins><i id="x9zvx"><strong id="x9zvx"><dfn id="x9zvx"><ruby id="x9zvx"></ruby></dfn></strong></i><ruby id="x9zvx"><thead id="x9zvx"></thead></ruby><em id="x9zvx"><meter id="x9zvx"><pre id="x9zvx"><i id="x9zvx"></i></pre></meter></em><p id="x9zvx"></p><th id="x9zvx"><b id="x9zvx"></b></th><font id="x9zvx"><div id="x9zvx"><pre id="x9zvx"><i id="x9zvx"></i></pre></div></font><big id="x9zvx"><acronym id="x9zvx"><pre id="x9zvx"><dfn id="x9zvx"></dfn></pre></acronym></big><mark id="x9zvx"><form id="x9zvx"><p id="x9zvx"><sup id="x9zvx"></sup></p></form></mark><thead id="x9zvx"><big id="x9zvx"><dl id="x9zvx"><pre id="x9zvx"></pre></dl></big></thead><meter id="x9zvx"></meter><i id="x9zvx"><listing id="x9zvx"><dfn id="x9zvx"><output id="x9zvx"></output></dfn></listing></i><legend id="x9zvx"><dfn id="x9zvx"><u id="x9zvx"><rp id="x9zvx"></rp></u></dfn></legend><tt id="x9zvx"></tt><ins id="x9zvx"></ins><form id="x9zvx"><rp id="x9zvx"><em id="x9zvx"><meter id="x9zvx"></meter></em></rp></form><div id="x9zvx"><ol id="x9zvx"><label id="x9zvx"><nobr id="x9zvx"></nobr></label></ol></div><div id="x9zvx"><ol id="x9zvx"><label id="x9zvx"><video id="x9zvx"></video></label></ol></div><p id="x9zvx"><var id="x9zvx"></var></p><dl id="x9zvx"></dl><var id="x9zvx"><form id="x9zvx"><rp id="x9zvx"><address id="x9zvx"></address></rp></form></var><i id="x9zvx"><strong id="x9zvx"></strong></i><strike id="x9zvx"><strong id="x9zvx"></strong></strike></div></html><!--ly_cache 2024-11-29 21:51:59-->