if语句中多个OR表达式的简写

是否有以下简写 –

if(tld == "com" || tld == "net" || tld == "co" || tld == "org" || tld == "info" || tld == "biz") { //do something; } 

Answer 1

你可以使用一个数组

 if(["","com","net","co","org","info","biz"].indexOf(tld) > -1) { // do something } 

或者如果你使用jquery：

 $.inArray(tld, ["com","net","co","org","info","biz"]) 

REF – OR运算（||）与inArray（）的表现

Answer 2

使用正则表达式：

 if ( /^(com|net|co|org|info|biz)$/i.test(tld) ) { // do something } 

Answer 3

你有没有想过使用switch语句？ 像这样的东西：

 switch(tld) { case 'com': case 'net': case 'co': ... ... // do something for all of them break; default: // if you want you can have default process here break; }