{"id":8295,"date":"2023-11-28T20:23:25","date_gmt":"2023-11-28T12:23:25","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=8295"},"modified":"2023-12-02T22:24:45","modified_gmt":"2023-12-02T14:24:45","slug":"vue-zhong-zi-ding-yi-zhi-ling-vcheckvfocus-de-fang","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/vue-zhong-zi-ding-yi-zhi-ling-vcheckvfocus-de-fang\/","title":{"rendered":"Vue \u4e2d\u81ea\u5b9a\u4e49\u6307\u4ee4\uff08v-check\u3001v-focus\uff09\u7684\u65b9\u6cd5\u6709\u54ea\u4e9b\uff1f\u5b83\u6709\u54ea\u4e9b\u94a9\u5b50\u51fd\u6570\uff1f\u8fd8\u6709\u54ea\u4e9b\u94a9\u5b50\u51fd\u6570\u53c2\u6570\uff1f"},"content":{"rendered":"<p>\u5728 Vue \u4e2d\uff0c\u81ea\u5b9a\u4e49\u6307\u4ee4\u53ef\u4ee5\u901a\u8fc7 <code>Vue.directive<\/code> \u65b9\u6cd5\u6765\u521b\u5efa\u3002\u521b\u5efa\u81ea\u5b9a\u4e49\u6307\u4ee4\u7684\u4e3b\u8981\u6b65\u9aa4\u5305\u62ec\u6ce8\u518c\u6307\u4ee4\u3001\u5b9a\u4e49\u94a9\u5b50\u51fd\u6570\u4ee5\u53ca\u5728\u94a9\u5b50\u51fd\u6570\u4e2d\u5b9e\u73b0\u76f8\u5e94\u7684\u903b\u8f91\u3002<\/p>\n<h3><a id=\"%E5%88%9B%E5%BB%BA%E8%87%AA%E5%AE%9A%E4%B9%89%E6%8C%87%E4%BB%A4%E7%9A%84%E6%96%B9%E6%B3%95%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>\u521b\u5efa\u81ea\u5b9a\u4e49\u6307\u4ee4\u7684\u65b9\u6cd5\uff1a<\/h3>\n<ol>\n<li><strong>\u5168\u5c40\u6ce8\u518c\uff1a<\/strong> \u5728 Vue \u5b9e\u4f8b\u5316\u4e4b\u524d\uff0c\u901a\u8fc7 <code>Vue.directive<\/code> \u65b9\u6cd5\u5168\u5c40\u6ce8\u518c\u81ea\u5b9a\u4e49\u6307\u4ee4\u3002<\/li>\n<\/ol>\n<pre><code class=\"language-javascript\">\/\/ \u5168\u5c40\u6ce8\u518c\u81ea\u5b9a\u4e49\u6307\u4ee4 v-check\nVue.directive('check', {\n  \/\/ \u5b9a\u4e49\u94a9\u5b50\u51fd\u6570\n  bind(el, binding, vnode) {\n    \/\/ \u5b9e\u73b0\u76f8\u5e94\u7684\u903b\u8f91\n  },\n  \/\/ ...\n});\n<\/code><\/pre>\n<ol start=\"2\">\n<li><strong>\u5c40\u90e8\u6ce8\u518c\uff1a<\/strong> \u5728\u7ec4\u4ef6\u7684 <code>directives<\/code> \u9009\u9879\u4e2d\u6ce8\u518c\u81ea\u5b9a\u4e49\u6307\u4ee4\u3002<\/li>\n<\/ol>\n<pre><code class=\"language-javascript\">export default {\n  directives: {\n    \/\/ \u5c40\u90e8\u6ce8\u518c\u81ea\u5b9a\u4e49\u6307\u4ee4 v-focus\n    focus: {\n      bind(el, binding, vnode) {\n        \/\/ \u5b9e\u73b0\u76f8\u5e94\u7684\u903b\u8f91\n      },\n      \/\/ ...\n    }\n  },\n  \/\/ ...\n};\n<\/code><\/pre>\n<h3><a id=\"%E8%87%AA%E5%AE%9A%E4%B9%89%E6%8C%87%E4%BB%A4%E7%9A%84%E9%92%A9%E5%AD%90%E5%87%BD%E6%95%B0%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>\u81ea\u5b9a\u4e49\u6307\u4ee4\u7684\u94a9\u5b50\u51fd\u6570\uff1a<\/h3>\n<ol>\n<li><strong>bind\uff1a<\/strong> \u53ea\u8c03\u7528\u4e00\u6b21\uff0c\u6307\u4ee4\u7b2c\u4e00\u6b21\u7ed1\u5b9a\u5230\u5143\u7d20\u65f6\u8c03\u7528\uff0c\u53ef\u4ee5\u5728\u8fd9\u91cc\u8fdb\u884c\u521d\u59cb\u5316\u8bbe\u7f6e\u3002<\/li>\n<li><strong>inserted\uff1a<\/strong> \u88ab\u7ed1\u5b9a\u5143\u7d20\u63d2\u5165\u7236\u8282\u70b9\u65f6\u8c03\u7528\u3002<\/li>\n<li><strong>update\uff1a<\/strong> \u6240\u5728\u7ec4\u4ef6\u7684 VNode \u66f4\u65b0\u65f6\u8c03\u7528\uff0c\u4f46\u53ef\u80fd\u5728\u5176\u5b50 VNode \u66f4\u65b0\u4e4b\u524d\u8c03\u7528\u3002<\/li>\n<li><strong>componentUpdated\uff1a<\/strong> \u6307\u4ee4\u6240\u5728\u7ec4\u4ef6\u7684 VNode \u53ca\u5176\u5b50 VNode \u5168\u90e8\u66f4\u65b0\u540e\u8c03\u7528\u3002<\/li>\n<li><strong>unbind\uff1a<\/strong> \u53ea\u8c03\u7528\u4e00\u6b21\uff0c\u6307\u4ee4\u4e0e\u5143\u7d20\u89e3\u7ed1\u65f6\u8c03\u7528\uff0c\u53ef\u4ee5\u5728\u8fd9\u91cc\u8fdb\u884c\u6e05\u7406\u5de5\u4f5c\u3002<\/li>\n<\/ol>\n<h3><a id=\"%E9%92%A9%E5%AD%90%E5%87%BD%E6%95%B0%E7%9A%84%E5%8F%82%E6%95%B0%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>\u94a9\u5b50\u51fd\u6570\u7684\u53c2\u6570\uff1a<\/h3>\n<p>\u94a9\u5b50\u51fd\u6570\u4e00\u822c\u63a5\u6536\u4ee5\u4e0b\u53c2\u6570\uff1a<\/p>\n<ul>\n<li><strong>el\uff1a<\/strong> \u6307\u4ee4\u6240\u7ed1\u5b9a\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u901a\u8fc7\u64cd\u4f5c DOM \u8fdb\u884c\u4e00\u4e9b\u64cd\u4f5c\u3002<\/li>\n<li><strong>binding\uff1a<\/strong> \u4e00\u4e2a\u5bf9\u8c61\uff0c\u5305\u542b\u6307\u4ee4\u7684\u76f8\u5173\u4fe1\u606f\uff0c\u5982\u6307\u4ee4\u7684\u503c\u3001\u4fee\u9970\u7b26\u7b49\u3002<\/li>\n<li><strong>vnode\uff1a<\/strong> Vue \u7f16\u8bd1\u751f\u6210\u7684\u865a\u62df\u8282\u70b9\u3002<\/li>\n<li><strong>oldVnode\uff1a<\/strong> \u4e0a\u4e00\u4e2a\u865a\u62df\u8282\u70b9\uff0c\u4ec5\u5728 <code>update<\/code> \u548c <code>componentUpdated<\/code> \u94a9\u5b50\u51fd\u6570\u4e2d\u53ef\u7528\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u5b9a\u4e49\u8fd9\u4e9b\u94a9\u5b50\u51fd\u6570\u5e76\u5229\u7528\u53c2\u6570\uff0c\u53ef\u4ee5\u5728\u81ea\u5b9a\u4e49\u6307\u4ee4\u4e2d\u5b9e\u73b0\u5404\u79cd\u4e0e DOM \u76f4\u63a5\u4ea4\u4e92\u7684\u529f\u80fd\uff0c\u6bd4\u5982\u9a8c\u8bc1\u3001\u805a\u7126\u3001\u52a8\u753b\u7b49\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Vue \u4e2d\uff0c\u81ea\u5b9a\u4e49\u6307\u4ee4\u53ef\u4ee5\u901a\u8fc7 Vue.directive \u65b9\u6cd5\u6765\u521b\u5efa\u3002\u521b\u5efa\u81ea\u5b9a\u4e49\u6307\u4ee4\u7684\u4e3b\u8981\u6b65\u9aa4\u5305\u62ec\u6ce8\u518c\u6307 [&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-8295","post","type-post","status-publish","format-standard","hentry","category-vue"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8295","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=8295"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8295\/revisions"}],"predecessor-version":[{"id":14086,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8295\/revisions\/14086"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=8295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=8295"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=8295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}