{"id":12114,"date":"2023-11-28T22:43:50","date_gmt":"2023-11-28T14:43:50","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12114"},"modified":"2023-11-29T23:40:08","modified_gmt":"2023-11-29T15:40:08","slug":"javascript-zhong-shen-me-shiset-dui-xiang-ta-shi-r","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-shen-me-shiset-dui-xiang-ta-shi-r\/","title":{"rendered":"JavaScript \u4e2d\u4ec0\u4e48\u662f Set \u5bf9\u8c61\uff0c\u5b83\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff1f"},"content":{"rendered":"<p>\u5728 JavaScript \u4e2d\uff0c<code>Set<\/code> \u5bf9\u8c61\u662f\u4e00\u79cd\u96c6\u5408\u7c7b\u578b\uff0c\u5b83\u5141\u8bb8\u4f60\u5b58\u50a8\u4e0d\u91cd\u590d\u7684\u503c\u3002<code>Set<\/code> \u4e2d\u7684\u503c\u662f\u552f\u4e00\u7684\uff0c\u6ca1\u6709\u91cd\u590d\u7684\u5143\u7d20\u3002<\/p>\n<p><code>Set<\/code> \u5bf9\u8c61\u7684\u5de5\u4f5c\u539f\u7406\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>\u552f\u4e00\u503c\u96c6\u5408<\/strong>\uff1a<code>Set<\/code> \u5bf9\u8c61\u5b58\u50a8\u7684\u503c\u662f\u552f\u4e00\u7684\uff0c\u91cd\u590d\u7684\u503c\u4f1a\u88ab\u5ffd\u7565\u3002<\/li>\n<li><strong>\u6570\u636e\u7c7b\u578b\u4e0d\u53d7\u9650\u5236<\/strong>\uff1a<code>Set<\/code> \u53ef\u4ee5\u5b58\u50a8\u4efb\u4f55\u7c7b\u578b\u7684\u503c\uff0c\u5305\u62ec\u539f\u59cb\u7c7b\u578b\u548c\u5bf9\u8c61\u5f15\u7528\u3002<\/li>\n<li><strong>\u6dfb\u52a0\u548c\u5220\u9664<\/strong>\uff1a\u53ef\u4ee5\u4f7f\u7528 <code>add()<\/code> \u65b9\u6cd5\u5411 <code>Set<\/code> \u4e2d\u6dfb\u52a0\u65b0\u7684\u503c\uff0c\u4f7f\u7528 <code>delete()<\/code> \u65b9\u6cd5\u5220\u9664\u7279\u5b9a\u7684\u503c\uff0c\u4f7f\u7528 <code>clear()<\/code> \u65b9\u6cd5\u6e05\u7a7a\u6240\u6709\u503c\u3002<\/li>\n<li><strong>\u8fed\u4ee3\u5668<\/strong>\uff1a\u53ef\u4ee5\u4f7f\u7528 <code>for...of<\/code> \u5faa\u73af\u6216 <code>forEach()<\/code> \u65b9\u6cd5\u904d\u5386 <code>Set<\/code> \u4e2d\u7684\u503c\u3002<\/li>\n<li><strong>\u5224\u65ad\u503c\u662f\u5426\u5b58\u5728<\/strong>\uff1a\u53ef\u4ee5\u4f7f\u7528 <code>has()<\/code> \u65b9\u6cd5\u68c0\u67e5\u67d0\u4e2a\u503c\u662f\u5426\u5b58\u5728\u4e8e <code>Set<\/code> \u4e2d\u3002<\/li>\n<li><strong>\u96c6\u5408\u5927\u5c0f<\/strong>\uff1a\u53ef\u4ee5\u4f7f\u7528 <code>size<\/code> \u5c5e\u6027\u83b7\u53d6 <code>Set<\/code> \u4e2d\u7684\u5143\u7d20\u4e2a\u6570\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-javascript\">const mySet = new Set();\n\nmySet.add(1);\nmySet.add(2);\nmySet.add(3);\nmySet.add(2); \/\/ \u91cd\u590d\u7684\u503c\u4f1a\u88ab\u5ffd\u7565\n\nconsole.log(mySet); \/\/ \u8f93\u51fa Set { 1, 2, 3 }\n\nconsole.log(mySet.size); \/\/ \u8f93\u51fa 3\n\nmySet.delete(2);\nconsole.log(mySet); \/\/ \u8f93\u51fa Set { 1, 3 }\n\nconsole.log(mySet.has(1)); \/\/ \u8f93\u51fa true\n\nmySet.forEach(value =&gt; console.log(value)); \/\/ \u904d\u5386\u8f93\u51fa Set \u4e2d\u7684\u503c\n<\/code><\/pre>\n<p><code>Set<\/code> \u63d0\u4f9b\u4e86\u4e00\u79cd\u5b58\u50a8\u552f\u4e00\u503c\u7684\u96c6\u5408\u7ed3\u6784\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5b58\u50a8\u975e\u91cd\u590d\u6570\u636e\u7684\u60c5\u51b5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 JavaScript \u4e2d\uff0cSet \u5bf9\u8c61\u662f\u4e00\u79cd\u96c6\u5408\u7c7b\u578b\uff0c\u5b83\u5141\u8bb8\u4f60\u5b58\u50a8\u4e0d\u91cd\u590d\u7684\u503c\u3002Set \u4e2d\u7684\u503c\u662f\u552f\u4e00\u7684\uff0c\u6ca1\u6709 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[115],"tags":[],"class_list":["post-12114","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12114","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=12114"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12114\/revisions"}],"predecessor-version":[{"id":13602,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12114\/revisions\/13602"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12114"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12114"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12114"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}