{"id":7626,"date":"2023-11-28T19:48:43","date_gmt":"2023-11-28T11:48:43","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=7626"},"modified":"2023-12-01T22:13:41","modified_gmt":"2023-12-01T14:13:41","slug":"vue-zhongvfor-zhong-dekey-de-li-jie","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/vue-zhongvfor-zhong-dekey-de-li-jie\/","title":{"rendered":"Vue \u4e2d v-for \u4e2d\u7684 key \u7684\u7406\u89e3\uff1f"},"content":{"rendered":"<p>\u5728 Vue \u4e2d\uff0c<code>v-for<\/code> \u6e32\u67d3\u5217\u8868\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>key<\/code> \u5c5e\u6027\u6765\u5e2e\u52a9 Vue \u8bc6\u522b\u6bcf\u4e2a\u8282\u70b9\u7684\u552f\u4e00\u6027\uff0c\u5e76\u5728\u5217\u8868\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u9ad8\u6548\u5730\u66f4\u65b0 DOM\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u552f\u4e00\u6027\u6807\u8bc6<\/strong>\uff1a<\/p>\n<ul>\n<li><code>key<\/code> \u5c5e\u6027\u7528\u4e8e\u4e3a\u6bcf\u4e2a\u88ab\u6e32\u67d3\u7684\u5143\u7d20\u6216\u7ec4\u4ef6\u8bbe\u7f6e\u4e00\u4e2a\u552f\u4e00\u7684\u6807\u8bc6\u7b26\u3002<\/li>\n<li>\u5728 Vue \u66f4\u65b0\u5217\u8868\u65f6\uff0c\u5b83\u4f1a\u6839\u636e <code>key<\/code> \u7684\u503c\u6765\u8bc6\u522b\u6bcf\u4e2a\u8282\u70b9\u7684\u552f\u4e00\u6027\uff0c\u4ee5\u4fbf\u9ad8\u6548\u5730\u66f4\u65b0 DOM\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u4f5c\u7528<\/strong>\uff1a<\/p>\n<ul>\n<li>\u5e2e\u52a9 Vue \u8bc6\u522b\u6bcf\u4e2a\u8282\u70b9\u7684\u552f\u4e00\u6027\uff0c\u786e\u4fdd\u6b63\u786e\u5730\u590d\u7528\u548c\u66f4\u65b0 DOM\u3002<\/li>\n<li>\u5f53\u6570\u636e\u53d1\u751f\u53d8\u5316\u65f6\uff0cVue \u4f1a\u6839\u636e <code>key<\/code> \u7684\u53d8\u5316\u60c5\u51b5\u5bf9\u6bd4\u65b0\u65e7\u8282\u70b9\uff0c\u4ece\u800c\u5224\u65ad\u662f\u65b0\u589e\u3001\u5220\u9664\u8fd8\u662f\u66f4\u65b0\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u907f\u514d\u5217\u8868\u6e32\u67d3\u7684\u95ee\u9898<\/strong>\uff1a<\/p>\n<ul>\n<li>\u5728\u4f7f\u7528 <code>v-for<\/code> \u6e32\u67d3\u5217\u8868\u65f6\uff0c\u5982\u679c\u4e0d\u8bbe\u7f6e <code>key<\/code>\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5728\u5217\u8868\u66f4\u65b0\u65f6\u51fa\u73b0\u6027\u80fd\u95ee\u9898\u6216\u51fa\u73b0\u610f\u6599\u4e4b\u5916\u7684\u6e32\u67d3\u884c\u4e3a\uff0c\u6bd4\u5982\u51fa\u73b0\u9519\u4e71\u7684 DOM \u5143\u7d20\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong><code>key<\/code> \u7684\u9009\u62e9<\/strong>\uff1a<\/p>\n<ul>\n<li>\u6700\u597d\u4f7f\u7528\u5177\u6709\u552f\u4e00\u6027\u7684\u503c\u4f5c\u4e3a <code>key<\/code>\uff0c\u6bd4\u5982\u6570\u636e\u4e2d\u7684\u552f\u4e00\u6807\u8bc6\u7b26\uff08ID\uff09\u3001\u7d22\u5f15\u7b49\u3002<\/li>\n<li>\u907f\u514d\u4f7f\u7528\u968f\u673a\u6570\u6216\u7d22\u5f15\u4f5c\u4e3a <code>key<\/code>\uff0c\u56e0\u4e3a\u5b83\u4eec\u5728\u5217\u8868\u66f4\u65b0\u65f6\u53ef\u80fd\u4e0d\u7a33\u5b9a\uff0c\u5bfc\u81f4\u4e0d\u5fc5\u8981\u7684\u91cd\u65b0\u6e32\u67d3\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u603b\u7684\u6765\u8bf4\uff0c<code>key<\/code> \u5c5e\u6027\u5728 <code>v-for<\/code> \u6e32\u67d3\u5217\u8868\u65f6\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u5b83\u80fd\u591f\u5e2e\u52a9 Vue \u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u66f4\u65b0\u5217\u8868\uff0c\u907f\u514d\u51fa\u73b0\u6e32\u67d3\u95ee\u9898\u548c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Vue \u4e2d\uff0cv-for \u6e32\u67d3\u5217\u8868\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528 key \u5c5e\u6027\u6765\u5e2e\u52a9 Vue \u8bc6\u522b\u6bcf\u4e2a\u8282\u70b9\u7684\u552f\u4e00\u6027\uff0c\u5e76\u5728\u5217\u8868\u53d1 [&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-7626","post","type-post","status-publish","format-standard","hentry","category-vue"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/7626","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=7626"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/7626\/revisions"}],"predecessor-version":[{"id":13927,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/7626\/revisions\/13927"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=7626"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=7626"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=7626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}