{"id":8036,"date":"2023-11-28T20:11:54","date_gmt":"2023-11-28T12:11:54","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=8036"},"modified":"2023-12-02T21:13:43","modified_gmt":"2023-12-02T13:13:43","slug":"vue-zhongvue-de-zi-ding-yi-zhi-ling","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/vue-zhongvue-de-zi-ding-yi-zhi-ling\/","title":{"rendered":"Vue \u4e2d vue \u7684\u81ea\u5b9a\u4e49\u6307\u4ee4\uff1f"},"content":{"rendered":"<p>\u5728 Vue \u4e2d\uff0c\u81ea\u5b9a\u4e49\u6307\u4ee4\uff08Custom Directives\uff09\u5141\u8bb8\u4f60\u5728 DOM \u5143\u7d20\u4e0a\u6dfb\u52a0\u81ea\u5b9a\u4e49\u884c\u4e3a\u3002Vue \u63d0\u4f9b\u4e86 <code>directive<\/code> \u51fd\u6570\u6765\u521b\u5efa\u81ea\u5b9a\u4e49\u6307\u4ee4\u3002\u81ea\u5b9a\u4e49\u6307\u4ee4\u6709\u5168\u5c40\u6307\u4ee4\u548c\u5c40\u90e8\u6307\u4ee4\u4e24\u79cd\u5f62\u5f0f\u3002<\/p>\n<h3><a id=\"%E5%85%A8%E5%B1%80%E6%8C%87%E4%BB%A4%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>\u5168\u5c40\u6307\u4ee4\uff1a<\/h3>\n<p>\u5728 Vue \u5b9e\u4f8b\u5316\u4e4b\u524d\uff0c\u901a\u8fc7 <code>Vue.directive<\/code> \u65b9\u6cd5\u521b\u5efa\u5168\u5c40\u81ea\u5b9a\u4e49\u6307\u4ee4\u3002<\/p>\n<pre><code class=\"language-javascript\">Vue.directive('custom-directive', {\n  \/\/ \u6307\u4ee4\u88ab\u7ed1\u5b9a\u5230\u5143\u7d20\u65f6\u89e6\u53d1\n  bind(el, binding, vnode) {\n    \/\/ \u7ed1\u5b9a\u65f6\u7684\u521d\u59cb\u5316\u64cd\u4f5c\n  },\n  \/\/ \u88ab\u7ed1\u5b9a\u5143\u7d20\u6240\u5728\u7684\u6a21\u677f\u66f4\u65b0\u65f6\u89e6\u53d1\n  update(el, binding, vnode, oldVnode) {\n    \/\/ \u66f4\u65b0\u64cd\u4f5c\n  },\n  \/\/ \u6307\u4ee4\u4e0e\u5143\u7d20\u89e3\u7ed1\u65f6\u89e6\u53d1\n  unbind(el, binding, vnode) {\n    \/\/ \u6e05\u7406\u5de5\u4f5c\n  }\n});\n<\/code><\/pre>\n<h3><a id=\"%E5%B1%80%E9%83%A8%E6%8C%87%E4%BB%A4%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>\u5c40\u90e8\u6307\u4ee4\uff1a<\/h3>\n<p>\u5728\u7ec4\u4ef6\u5185\u90e8\u7684 <code>directives<\/code> \u9009\u9879\u4e2d\u5b9a\u4e49\u5c40\u90e8\u6307\u4ee4\u3002<\/p>\n<pre><code class=\"language-javascript\">export default {\n  directives: {\n    'custom-directive': {\n      bind(el, binding, vnode) {\n        \/\/ \u7ed1\u5b9a\u65f6\u7684\u521d\u59cb\u5316\u64cd\u4f5c\n      },\n      update(el, binding, vnode, oldVnode) {\n        \/\/ \u66f4\u65b0\u64cd\u4f5c\n      },\n      unbind(el, binding, vnode) {\n        \/\/ \u6e05\u7406\u5de5\u4f5c\n      }\n    }\n  }\n}\n<\/code><\/pre>\n<p>\u81ea\u5b9a\u4e49\u6307\u4ee4\u7684\u94a9\u5b50\u51fd\u6570\u53c2\u6570\u89e3\u91ca\uff1a<\/p>\n<ul>\n<li><code>bind<\/code>\uff1a\u6307\u4ee4\u7b2c\u4e00\u6b21\u7ed1\u5b9a\u5230\u5143\u7d20\u65f6\u89e6\u53d1\u3002\u53ef\u4ee5\u5728\u8fd9\u91cc\u8fdb\u884c\u4e00\u6b21\u6027\u7684\u521d\u59cb\u5316\u8bbe\u7f6e\u3002<\/li>\n<li><code>update<\/code>\uff1a\u5f53\u7ed1\u5b9a\u6307\u4ee4\u7684\u5143\u7d20\u6240\u5728\u7ec4\u4ef6\u7684 VNode \u66f4\u65b0\u65f6\u89e6\u53d1\uff0c\u53ef\u80fd\u4f1a\u53d1\u751f\u9891\u7e41\u8c03\u7528\uff0c\u6bd4\u5982\u7236\u7ec4\u4ef6\u66f4\u65b0\u5bfc\u81f4\u5b50\u7ec4\u4ef6\u66f4\u65b0\u3002<\/li>\n<li><code>unbind<\/code>\uff1a\u6307\u4ee4\u4e0e\u5143\u7d20\u89e3\u7ed1\u65f6\u89e6\u53d1\u3002\u53ef\u4ee5\u5728\u8fd9\u91cc\u8fdb\u884c\u6e05\u7406\u5de5\u4f5c\uff0c\u6bd4\u5982\u79fb\u9664\u4e8b\u4ef6\u76d1\u542c\u5668\u6216\u5176\u4ed6\u7ed1\u5b9a\u7684\u4e1c\u897f\u3002<\/li>\n<\/ul>\n<p>\u81ea\u5b9a\u4e49\u6307\u4ee4\u5141\u8bb8\u4f60\u76f4\u63a5\u64cd\u4f5c DOM\uff0c\u6dfb\u52a0\u4e8b\u4ef6\u76d1\u542c\u5668\u3001\u4fee\u6539\u5143\u7d20\u6837\u5f0f\u7b49\uff0c\u6269\u5c55\u4e86 Vue \u7684\u529f\u80fd\u6027\u3002\u6bd4\u5982\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u81ea\u5b9a\u4e49\u6307\u4ee4\u6765\u5904\u7406\u7279\u5b9a\u7684\u4ea4\u4e92\u884c\u4e3a\uff0c\u6216\u8005\u5c01\u88c5\u5e38\u7528\u7684 DOM \u64cd\u4f5c\uff0c\u8ba9\u5176\u53ef\u4ee5\u5728\u591a\u4e2a\u7ec4\u4ef6\u4e2d\u590d\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Vue \u4e2d\uff0c\u81ea\u5b9a\u4e49\u6307\u4ee4\uff08Custom Directives\uff09\u5141\u8bb8\u4f60\u5728 DOM \u5143\u7d20\u4e0a\u6dfb\u52a0\u81ea\u5b9a\u4e49\u884c\u4e3a\u3002Vue [&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-8036","post","type-post","status-publish","format-standard","hentry","category-vue"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8036","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=8036"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8036\/revisions"}],"predecessor-version":[{"id":14025,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8036\/revisions\/14025"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=8036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=8036"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=8036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}