javascript - 用多个 OR || 简化 IF 语句相同变量的条件

Question

这是我的代码

var something = "four";

if(
    something == "one" || 
    something == "two" || 
    something == "three" ||
    something == "five" ||
    something == "six" ||
    something == "seven"
){
    document.body.innerHTML = "<h1>yes</h1>";
}else{
    document.body.innerHTML = "<h1>no</h1>";
}

如果所有条件都考虑同一个变量，有没有办法简化 IF 语句？

DEMO

Answer 1

试试这个:

var something = 4;

if([1,2,3,5,6,7].indexOf(something) > -1) {
 document.body.innerHTML = "<h1>yes</h1>";
} else {
 document.body.innerHTML = "<h1>no</h1>";
}

JSFiddle:http://jsfiddle.net/2onn6Lc2/1/

此外，请将此类问题发布到 https://codereview.stackexchange.com/