{"id":8488,"date":"2023-11-28T20:29:36","date_gmt":"2023-11-28T12:29:36","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=8488"},"modified":"2023-12-04T18:11:49","modified_gmt":"2023-12-04T10:11:49","slug":"vue-zhong-nexttick-de-shi-yong-3","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/vue-zhong-nexttick-de-shi-yong-3\/","title":{"rendered":"Vue \u4e2d $nextTick \u7684\u4f7f\u7528\uff1f"},"content":{"rendered":"<p><code>$nextTick<\/code> \u662f Vue \u63d0\u4f9b\u7684\u4e00\u4e2a\u65b9\u6cd5\uff0c\u7528\u4e8e\u5728 DOM \u66f4\u65b0\u4e4b\u540e\u6267\u884c\u4ee3\u7801\u3002\u5728 Vue \u4e2d\uff0c\u66f4\u65b0 DOM \u662f\u5f02\u6b65\u6267\u884c\u7684\uff0c\u5f53\u4f60\u4fee\u6539\u6570\u636e\u540e\uff0cVue \u5e76\u4e0d\u4f1a\u7acb\u5373\u66f4\u65b0 DOM\uff0c\u800c\u662f\u5c06 DOM \u66f4\u65b0\u653e\u5165\u961f\u5217\u4e2d\uff0c\u7136\u540e\u5728\u4e00\u4e2a\u4e8b\u4ef6\u5faa\u73af\uff08Event Loop\uff09\u4e4b\u540e\u6267\u884c\u3002<\/p>\n<p><code>$nextTick<\/code> \u65b9\u6cd5\u7684\u4f5c\u7528\u662f\u5728 DOM \u66f4\u65b0\u5b8c\u6210\u540e\uff0c\u7acb\u5373\u6267\u884c\u4f20\u5165\u7684\u56de\u8c03\u51fd\u6570\u3002\u8fd9\u5bf9\u4e8e\u9700\u8981\u5728\u66f4\u65b0\u540e\u64cd\u4f5c DOM \u7684\u60c5\u51b5\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h3>\u4f7f\u7528\u65b9\u6cd5<\/h3>\n<pre><code class=\"language-javascript  line-numbers\">\/\/ \u5728 Vue \u5b9e\u4f8b\u65b9\u6cd5\u5185\u90e8\nthis.$nextTick(() =&gt; {\n  \/\/ \u5728 DOM \u66f4\u65b0\u5b8c\u6210\u540e\u6267\u884c\u7684\u64cd\u4f5c\n});\n<\/code><\/pre>\n<pre><code class=\"language-javascript  line-numbers\">\/\/ \u5728\u7ec4\u4ef6\u4e2d\nmethods: {\n  someMethod() {\n    \/\/ \u4fee\u6539\u6570\u636e\n    this.someData = 'new value';\n\n    \/\/ \u5728 DOM \u66f4\u65b0\u540e\u6267\u884c\u64cd\u4f5c\n    this.$nextTick(() =&gt; {\n      \/\/ \u64cd\u4f5c\u66f4\u65b0\u540e\u7684 DOM\n    });\n  }\n}\n<\/code><\/pre>\n<h3>\u4f8b\u5b50<\/h3>\n<pre><code class=\"language-vue  line-numbers\">&lt;template&gt;\n  &lt;div&gt;\n    &lt;p ref=\"message\"&gt;{{ message }}&lt;\/p&gt;\n    &lt;button @click=\"updateMessage\"&gt;Update Message&lt;\/button&gt;\n  &lt;\/div&gt;\n&lt;\/template&gt;\n\n&lt;script&gt;\nexport default {\n  data() {\n    return {\n      message: 'Original message',\n    };\n  },\n  methods: {\n    updateMessage() {\n      this.message = 'Updated message';\n      this.<span class=\"katex math inline\">nextTick(() =&gt; {\n        \/\/ \u5728 DOM \u66f4\u65b0\u540e\u83b7\u53d6\u66f4\u65b0\u540e\u7684\u6587\u672c\u5185\u5bb9\n        console.log(this.<\/span>refs.message.textContent); \/\/ \u8f93\u51fa\uff1a'Updated message'\n      });\n    },\n  },\n};\n&lt;\/script&gt;\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5f53\u70b9\u51fb\u6309\u94ae\u66f4\u65b0\u6d88\u606f\u65f6\uff0c\u4f7f\u7528 <code>$nextTick<\/code> \u786e\u4fdd\u5728 DOM \u66f4\u65b0\u540e\u83b7\u53d6\u66f4\u65b0\u540e\u7684\u6587\u672c\u5185\u5bb9\uff0c\u907f\u514d\u76f4\u63a5\u83b7\u53d6\u5bfc\u81f4\u62ff\u5230\u7684\u662f\u65e7\u7684\u6587\u672c\u5185\u5bb9\u3002\u8fd9\u6837\u53ef\u4ee5\u4fdd\u8bc1\u5728\u66f4\u65b0\u540e\u64cd\u4f5c DOM \u7684\u6570\u636e\u662f\u6700\u65b0\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>$nextTick \u662f Vue \u63d0\u4f9b\u7684\u4e00\u4e2a\u65b9\u6cd5\uff0c\u7528\u4e8e\u5728 DOM \u66f4\u65b0\u4e4b\u540e\u6267\u884c\u4ee3\u7801\u3002\u5728 Vue \u4e2d\uff0c\u66f4\u65b0 DOM [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-8488","post","type-post","status-publish","format-standard","hentry","category-vue"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8488","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=8488"}],"version-history":[{"count":4,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8488\/revisions"}],"predecessor-version":[{"id":15352,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8488\/revisions\/15352"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=8488"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=8488"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=8488"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}