1字符串1.1少用正则表达式能用PHP内部字符串操作函数的情况下,尽量用他们,不要用正则表达式,因为其效率高于正则。没得说,正则最耗性能。str_replace函数要比preg_replace快得多,strtr函数又比str_replace来得快。有...
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85、minN此段代码输出数组中前n位最小的数。constminN=(arr,n=1)=>[...arr].sort((a,b)=>a-b).slice(0,n);minN([1,2,3]);//[1]minN([1,2,3],2);//...
64、getColonTimeFromDate用于判断程序运行环境是否在浏览器,这有助于避免在node环境运行前端模块时出错。constisBrowser=()=>![typeofwindow,typeofdocument].includes(...
43、getColonTimeFromDate此段代码从Date对象里获取当前时间。constgetColonTimeFromDate=date=>date.toTimeString().slice(0,8);getColonTimeFromD...