{"id":3299,"date":"2020-01-10T15:43:17","date_gmt":"2020-01-10T07:43:17","guid":{"rendered":"https:\/\/yanjingang.com\/blog\/?p=3299"},"modified":"2020-01-10T15:50:16","modified_gmt":"2020-01-10T07:50:16","slug":"vue%e6%95%b0%e7%bb%84%e4%bf%ae%e6%94%b9%e7%9a%84%e6%b8%b2%e6%9f%93%e6%80%a7%e8%83%bd%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/yanjingang.com\/blog\/?p=3299","title":{"rendered":"vue\u6570\u7ec4\u4fee\u6539\u7684\u6e32\u67d3\u6027\u80fd\u95ee\u9898"},"content":{"rendered":"

\u6700\u8fd1\u7528vue\u505a\u4e00\u4e2a\u5c0f\u4e1c\u897f\uff0c\u53d1\u73b0\u4e86\u4e00\u4e2a\u5947\u602a\u7684\u73b0\u8c61\uff0c\u5f53\u6a21\u677f\u4f7f\u7528\u6570\u7ec4\u8fdb\u884cv-if\u5224\u65ad\u65f6\uff0c\u5982\u679c\u4fee\u6539\u6570\u7ec4\u7684\u503c\uff0c\u9875\u9762\u6e32\u67d3\u4f1a\u660e\u663e\u6709\u5ef6\u8fdf\uff0c\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

<template>\r\n    <div class=\"moudle\" v-for=\"v in list\" :key=\"v.id\">\r\n        <div class=\"btn\" @click=\"show_more(v.id)\"><\/div>\r\n        <div class=\"more\" v-if=\"more[v.id]\"<\/span>>\u8fd9\u4e2a\u66f4\u591a\u663e\u793a\u53cd\u5e94\u6709\u5ef6\u8fdf<\/span><\/div>\r\n        <div class=\"content\">{{v.name}}<\/div>\r\n    <\/div>\r\n<\/template>\r\n\r\n<script>\r\n    export default {\r\n          data() {\r\n               return {\r\n                   list:[{'id':0,'name':'a'},{'id':1,'name':'b'},{'id':2,'name':'c'}],\r\n                   more: [false,false,false]\r\n               }\r\n          },\r\n          methods: {\r\n               show_more(id) {\r\n                   this.more[id] = true;  \/\/\u6b64\u5904\u4ee3\u7801\u6267\u884c\u5b8c\u6bd5\u7ea61s\u540e\u9875\u9762\u624d\u6709\u53cd\u5e94<\/span>\r\n                   console.log('set done!');\r\n               }\r\n          },\r\n    }\r\n<\/script><\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u4ee3\u7801\u903b\u8f91\u975e\u5e38\u7b80\u5355\uff0c\u901a\u8fc7console.log\u65e5\u5fd7\u80fd\u770b\u5230\u70b9\u51fb\u77ac\u95f4\u5c31\u6267\u884c\u5b8c\u6bd5\u4e86\uff0c\u4f46\u662f\u5ef6\u8fdf\u5c06\u8fd11s\u540emore\u533a\u57df\u624d\u663e\u793a\uff0c\u628av-if\u6362\u6210v-show\u6ca1\u6709\u53d8\u5316\uff0c\u628amore\u53d8\u91cf\u6539\u4e3a\u975e\u6570\u7ec4\u53d8\u91cf\u5c31\u80fd\u6b63\u5e38\u77ac\u95f4\u663e\u793a<\/span>\u3002<\/p>\n
\u7ecf\u8fc7\u53cd\u590d\u6d4b\u8bd5\uff0c\u53d1\u73b0vue\u7684\u865a\u62dfdom\u6e32\u67d3\u5728\u6570\u7ec4\u7ec4\u4ef6\u66f4\u65b0\u7684\u5730\u65b9\u4ee3\u7801\u903b\u8f91\u4e3a\uff1a<\/p>\n
vue\/src\/core\/observer\/index.js\u00a0 data\u6570\u636e\u4f1a\u7edf\u4e00\u8f6c\u4e3aObserver\u7c7b\uff0c\u4e4b\u540e\u7684this.\u6570\u7ec4\u7684\u4fee\u6539\u4f1a\u89e6\u53d1dependArray()\u51fd\u6570\u904d\u5386\u6570\u7ec4\u8fdb\u884c\u9012\u5f52\u7684ob\u8f6c\u6362\u548c\u76d1\u542c\u7ed1\u5b9a\u3002<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6cd5\u4e00\uff08\u63a8\u8350\uff09<\/span>\uff1a\u7528$set\u76f4\u63a5\u4fee\u6539\u5355\u4e2a\u503c\uff0c\u4e0d\u4f1a\u89e6\u53d1\u6574\u4e2a\u6570\u7ec4\u7ec4\u4ef6\u66f4\u65b0\uff0c\u53c8\u80fd\u54cd\u5e94\u5f0f<\/p>\n
show_more(id) {\r\n    \/\/this.more[id] = true; \r\n    this.$set(this.more, id, true);<\/span>  \/\/\u4e0d\u4f1a\u89e6\u53d1\u7ec4\u4ef6\u66f4\u65b0\r\n}<\/code><\/pre>\n
\u89e3\u51b3\u65b9\u6cd5\u4e8c\uff1a\u7528cost []\u7684\u65b9\u5f0f\u5b9a\u4e49\u6570\u636e\uff0c\u5728\u521d\u6b21\u8c03\u7528\u65f6\u6162<\/span>\uff0c\u521d\u59cb\u5316\u4ee5\u540e\u5c31\u5feb\u4e86<\/p>\n
<script>\r\n    const more = [false,false,false];<\/span>\r\n    export default {\r\n          data() {\r\n               return {\r\n                   list:[{'id':0,'name':'a'},{'id':1,'name':'b'},{'id':2,'name':'c'}],\r\n                   more: more<\/span>\r\n               }\r\n          },\r\n          methods: {\r\n               show_more(id) {\r\n                   this.more[id] = true;\r\n                   console.log('set done!');\r\n               }\r\n          },\r\n    }\r\n<\/script><\/code><\/pre>\n
 <\/p>\n
yan 20.1.10<\/p>\n
 <\/p>\n
\u53c2\u8003\uff1ahttps:\/\/juejin.im\/post\/5c0dec8be51d451dac076f76<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"
\u6700\u8fd1\u7528vue\u505a\u4e00\u4e2a\u5c0f\u4e1c\u897f\uff0c\u53d1\u73b0\u4e86\u4e00\u4e2a\u5947\u602a\u7684\u73b0\u8c61\uff0c\u5f53\u6a21\u677f\u4f7f\u7528\u6570\u7ec4\u8fdb\u884cv-if\u5224\u65ad\u65f6\uff0c\u5982\u679c\u4fee\u6539\u6570\u7ec4\u7684\u503c\uff0c\u9875\u9762\u6e32\u67d3\u4f1a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[925],"tags":[926,927],"_links":{"self":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3299"}],"collection":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3299"}],"version-history":[{"count":0,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3299\/revisions"}],"wp:attachment":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}