{"id":53023,"date":"2024-12-03T14:57:41","date_gmt":"2024-12-03T06:57:41","guid":{"rendered":"https:\/\/fwq.ai\/blog\/53023\/"},"modified":"2024-12-03T14:57:41","modified_gmt":"2024-12-03T06:57:41","slug":"vue2-%e4%b8%ad-v-if-%e4%b8%8e-v-else-if-%e5%8f%8c%e6%9d%a1%e4%bb%b6%e6%b8%b2%e6%9f%93%e4%b8%8d%e6%88%90%e5%8a%9f%e7%9a%84%e5%8e%9f%e5%9b%a0%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/53023\/","title":{"rendered":"Vue2 \u4e2d v-if \u4e0e v-else-if \u53cc\u6761\u4ef6\u6e32\u67d3\u4e0d\u6210\u529f\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Vue2 \u4e2d v-if \u4e0e v-else-if \u53cc\u6761\u4ef6\u6e32\u67d3\u4e0d\u6210\u529f\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/h1>\n<p><span style=\"font-size: 15px\">\u5b66\u4e60\u77e5\u8bc6\u8981\u5584\u4e8e\u601d\u8003\uff0c\u601d\u8003\uff0c\u518d\u601d\u8003\uff01\u4eca\u5929\u7c73\u4e91\u5c0f\u7f16\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aVue2 \u4e2d v-if \u4e0e v-else-if \u53cc\u6761\u4ef6\u6e32\u67d3\u4e0d\u6210\u529f\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u5305\u542b<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6216\u51c6\u5907\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\uff0c\u5c31\u90fd\u4e0d\u8981\u9519\u8fc7\u672c\u6587\u5566~\u8ba9\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff0c\u80fd\u5e2e\u52a9\u5230\u4f60\u5c31\u66f4\u597d\u4e86\uff01<\/span><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241125\/1732535331674464230f237.jpg\" class=\"aligncenter\" title=\"Vue2 \u4e2d v-if \u4e0e v-else-if \u53cc\u6761\u4ef6\u6e32\u67d3\u4e0d\u6210\u529f\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f\u63d2\u56fe\" alt=\"Vue2 \u4e2d v-if \u4e0e v-else-if \u53cc\u6761\u4ef6\u6e32\u67d3\u4e0d\u6210\u529f\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>vue2 v-if \u4e0e v-else-if \u53cc\u6761\u4ef6\u6e32\u67d3\u4e0d\u6210\u529f\uff1f<\/strong><\/p>\n<p>\u5728 vue2 \u4e2d\u4f7f\u7528 v-if \u548c v-else-if \u5b9e\u73b0\u53cc\u6761\u4ef6\u6e32\u67d3\u65f6\uff0c\u5982\u679c\u4ec5\u4ec5\u6ee1\u8db3\u7b2c\u4e00\u4e2a v-if \u6761\u4ef6\u5374\u603b\u662f\u6e32\u67d3 v-else \u4e0b\u7684\u5143\u7d20\uff0c\u5176\u539f\u56e0\u901a\u5e38\u5728\u4e8e\u6761\u4ef6\u5224\u65ad\u4e2d\u51fa\u73b0\u95ee\u9898\u3002<\/p>\n<p>\u4ee5\u4e0b\u4ee3\u7801\u5c55\u793a\u4e86\u95ee\u9898\u793a\u4f8b\uff1a<\/p>\n<pre>&lt;div v-if=\"item.msg_unit == '\u6dfb\u52a0\u53c2\u4e0e\u4eba'\"&gt;&lt;\/div&gt;\n&lt;div v-else-if=\"item.msg_unit == '\u53c2\u4e0e\u4eba' &amp;&amp; item.msg_unit_action == '\u5220\u9664'\"&gt;&lt;\/div&gt;<\/pre>\n<p>\u5f53 item \u6ee1\u8db3\u6761\u4ef6 item.msg_unit == &#8216;\u6dfb\u52a0\u53c2\u4e0e\u4eba&#8217; \u65f6\uff0c\u8be5\u5143\u7d20\u5c06\u88ab\u6e32\u67d3\u3002\u7136\u800c\uff0c\u5f53 item \u540c\u65f6\u6ee1\u8db3 item.msg_unit == &#8216;\u53c2\u4e0e\u4eba&#8217; \u548c item.msg_unit_action == &#8216;\u5220\u9664&#8217; \u4e24\u4e2a\u6761\u4ef6\u65f6\uff0cv-else \u4e0b\u7684\u5143\u7d20\u4f1a\u9519\u8bef\u5730\u88ab\u6e32\u67d3\u3002<\/p>\n<p>\u6b64\u95ee\u9898\u7684\u539f\u56e0\u5728\u4e8e\uff0c\u5728 v-else-if \u6761\u4ef6\u4e2d\uff0cv-if \u6761\u4ef6\u672c\u8eab\u4e5f\u4f1a\u88ab\u8ba1\u7b97\u3002\u8fd9\u610f\u5473\u7740\uff0c\u5982\u679c\u7b2c\u4e00\u4e2a v-if \u6761\u4ef6\u5df2\u7ecf\u6ee1\u8db3\uff0c\u5219 v-else-if \u6761\u4ef6\u6c38\u8fdc\u4e0d\u4f1a\u88ab\u8bc4\u4f30\uff0c\u4ece\u800c\u5bfc\u81f4 v-else \u4e0b\u7684\u5143\u7d20\u88ab\u6e32\u67d3\u3002<\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u5c1d\u8bd5\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u786e\u4fdd item \u5bf9\u8c61\u4e2d msg_unit \u548c msg_unit_action \u5c5e\u6027\u7684\u503c\u90fd\u662f\u6b63\u786e\u7684\u3002<\/li>\n<li>\u53ef\u4ee5\u5c06 item \u5bf9\u8c61\u8f93\u51fa\u5230\u63a7\u5236\u53f0\u4e2d\u5e76\u67e5\u770b\u5c5e\u6027\u503c\u662f\u5426\u6b63\u786e\u3002<\/li>\n<li>\u5c1d\u8bd5\u5c06 v-if \u548c v-else-if \u6761\u4ef6\u62c6\u5206\u4e3a\u4e24\u4e2a\u72ec\u7acb\u7684 v-if \u6761\u4ef6\uff1a<\/li>\n<\/ul>\n<pre>&lt;div v-if=\"item.msg_unit == '\u6dfb\u52a0\u53c2\u4e0e\u4eba'\"&gt;&lt;\/div&gt;\n&lt;div v-if=\"item.msg_unit == '\u53c2\u4e0e\u4eba' &amp;&amp; item.msg_unit_action == '\u5220\u9664'\"&gt;&lt;\/div&gt;\n&lt;div v-else&gt;&lt;\/div&gt;<\/pre>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n<dl>\n<dt><\/dt>\n<dd>\n   \u5982\u4f55\u638c\u63e1 MySQL \u5e38\u7528\u57fa\u7840\u547d\u4ee4\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>Vue2 \u4e2d v-if \u4e0e v-else-if \u53cc\u6761\u4ef6\u6e32\u67d3\u4e0d\u6210\u529f\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f \u5b66\u4e60\u77e5\u8bc6\u8981\u5584\u4e8e\u601d\u8003\uff0c\u601d\u8003\uff0c\u518d\u601d\u8003\uff01\u4eca\u5929\u7c73\u4e91\u5c0f\u7f16\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300aVue2 \u4e2d v-if \u4e0e v-else-if \u53cc\u6761\u4ef6\u6e32\u67d3\u4e0d\u6210\u529f\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u5305\u542b\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6216\u51c6\u5907\u5b66\u4e60\u6587\u7ae0\uff0c\u5c31\u90fd\u4e0d\u8981\u9519\u8fc7\u672c\u6587\u5566~\u8ba9\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff0c\u80fd\u5e2e\u52a9\u5230\u4f60\u5c31\u66f4\u597d\u4e86\uff01 vue2 v-if \u4e0e v-else-if \u53cc\u6761\u4ef6\u6e32\u67d3\u4e0d\u6210\u529f\uff1f \u5728 vue2 \u4e2d\u4f7f\u7528 v-if \u548c v-else-if \u5b9e\u73b0\u53cc\u6761\u4ef6\u6e32\u67d3\u65f6\uff0c\u5982\u679c\u4ec5\u4ec5\u6ee1\u8db3\u7b2c\u4e00\u4e2a v-if \u6761\u4ef6\u5374\u603b\u662f\u6e32\u67d3 v-else \u4e0b\u7684\u5143\u7d20\uff0c\u5176\u539f\u56e0\u901a\u5e38\u5728\u4e8e\u6761\u4ef6\u5224\u65ad\u4e2d\u51fa\u73b0\u95ee\u9898\u3002 \u4ee5\u4e0b\u4ee3\u7801\u5c55\u793a\u4e86\u95ee\u9898\u793a\u4f8b\uff1a &lt;div v-if=&#8221;item.msg_unit == &#8216;\u6dfb\u52a0\u53c2\u4e0e\u4eba'&#8221;&gt;&lt;\/div&gt; &lt;div v-else-if=&#8221;item.msg_unit == &#8216;\u53c2\u4e0e\u4eba&#8217; &amp;&amp; item.msg_unit_action == &#8216;\u5220\u9664'&#8221;&gt;&lt;\/div&gt; \u5f53 item \u6ee1\u8db3\u6761\u4ef6 item.msg_unit == &#8216;\u6dfb\u52a0\u53c2\u4e0e\u4eba&#8217; \u65f6\uff0c\u8be5\u5143\u7d20\u5c06\u88ab\u6e32\u67d3\u3002\u7136\u800c\uff0c\u5f53 item \u540c\u65f6\u6ee1\u8db3 item.msg_unit == &#8216;\u53c2\u4e0e\u4eba&#8217; \u548c item.msg_unit_action [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-53023","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/53023","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=53023"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/53023\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=53023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=53023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=53023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}