{"id":526,"date":"2011-07-13T18:37:26","date_gmt":"2011-07-13T10:37:26","guid":{"rendered":"http:\/\/www.clonefactor.com\/wordpress\/?p=526"},"modified":"2013-08-17T23:17:34","modified_gmt":"2013-08-17T15:17:34","slug":"math-random-%e7%9a%84%e4%b8%8d%e5%85%ac%e5%b9%b3","status":"publish","type":"post","link":"https:\/\/www.clonefactor.com\/wordpress\/webdevelop\/526\/","title":{"rendered":"Math.random \u7684\u4e0d\u516c\u5e73"},"content":{"rendered":"<p>javascript \u4e2d\u7684 Math.random \u672c\u8eab\u4e26\u6c92\u6709\u554f\u984c, \u554f\u984c\u662f\u4f7f\u7528\u8005\u5f8c\u7e7c\u7684\u64cd\u4f5c.<\/p>\n<p>\u56e0\u70ba\u901a\u5e38 random \u4e5f\u4f7f\u7528\u65bc array \u8eab\u4e0a\u4f5c\u53d6\u503c,<\/p>\n<p>[js]var YourArray=[&quot;a&quot;,&quot;b&quot;,&quot;c&quot;]; \/\/ \u5982\u679c\u5e0c\u671b\u65bc YourArray \u4e2d\u4efb\u610f\u62bd\u53d6\u4e00\u503c\u4f5c\u8f38\u51fa.<br \/>\nMath.round(Math.random(YourArray.length-1)); \/\/ \u9019\u6a23\u5c31\u767c\u73fe &quot;a&quot; \u5dee\u4e0d\u591a\u4e0d\u51fa\u73fe<\/p>\n<p>\/*<br \/>\n\u56e0\u70ba\u00a0 &quot;a&quot; \u7684\u6a5f\u7387\u53ea\u6709 0 ~ 0.49 \u56e0\u70ba\u56db\u6368\u4e94\u5165\u7684\u95dc\u4fc2<br \/>\n\u6240\u4ee5\u70ba\u4e86\u63d0\u5347\u5404\u6574\u6578\u6578\u503c\u7684 random \u6a5f\u7387, \u61c9\u8a72\u53e6\u5beb function \u8ca0\u8cac. *\/[\/js]<\/p>\n<p><img decoding=\"async\" title=\"{#th_023_.gif}\" src=\"http:\/\/www.clonefactor.com\/wordpress\/wp-content\/plugins\/tinymce-advanced\/mce\/emotions\/img\/onion\/normal\/th_023_.gif\" alt=\"{#th_023_.gif}\" border=\"0\" \/><\/p>\n<p>[js]\/*************<br \/>\nRandom Number : more balance<br \/>\n*************\/<br \/>\nfunction randomNum(_start,_end){<br \/>\n\/\/ include _end number.<br \/>\nvar _range = 10;<br \/>\nvar _rtn=0;<br \/>\nif(_start==null) _start=10;<br \/>\nif(_end==null){ _end=_start; _start=0; };<br \/>\nwhile( Math.abs(_end-_start)&gt;_range ){ _range*=10; }<br \/>\nvar _tmp = Math.random()*_range;<br \/>\n_rtn = Math.ceil(_tmp\/(_range\/(_end-_start+1)))+_start-1;<br \/>\n\/\/ $.debug(&quot;start:&quot;+_start+&quot;, end:&quot;+_end+&quot; return:&quot;+ _rtn+&quot;(&quot;+_tmp+&quot;)&quot;);<br \/>\nreturn _rtn;<br \/>\n}[\/js]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>javascript \u4e2d\u7684 Math.random \u672c\u8eab\u4e26\u6c92\u6709\u554f\u984c, \u554f\u984c\u662f\u4f7f\u7528\u8005\u5f8c\u7e7c\u7684\u64cd\u4f5c. \u56e0\u70ba &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[27],"class_list":["post-526","post","type-post","status-publish","format-standard","hentry","category-webdevelop","tag-javascript"],"_links":{"self":[{"href":"https:\/\/www.clonefactor.com\/wordpress\/wp-json\/wp\/v2\/posts\/526","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.clonefactor.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.clonefactor.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.clonefactor.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.clonefactor.com\/wordpress\/wp-json\/wp\/v2\/comments?post=526"}],"version-history":[{"count":0,"href":"https:\/\/www.clonefactor.com\/wordpress\/wp-json\/wp\/v2\/posts\/526\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.clonefactor.com\/wordpress\/wp-json\/wp\/v2\/media?parent=526"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.clonefactor.com\/wordpress\/wp-json\/wp\/v2\/categories?post=526"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.clonefactor.com\/wordpress\/wp-json\/wp\/v2\/tags?post=526"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}