判断js中的类型

判断js中的类型:

alert(Object.prototype.toString.apply([1,2]));    //"[object Array]"
alert(Object.prototype.toString.apply('str'));    //"[object String]"
alert(Object.prototype.toString.apply(1));       //"[object Number]"
alert(Object.prototype.toString.apply(null));     //"[object Null]"
alert(Object.prototype.toString.apply());         //"[object Undefined]"
alert(Object.prototype.toString.apply(function(){}));      //"[object Function]"
alert(Object.prototype.toString.apply(true))     //"[object Boolean]"
alert(Object.prototype.toString.apply(new Object()));     //"[object Object]"

function aa(){
console.log("aa测试用例");
}
var b={};
//aa.call(b); //相当于b.aa(),将aa()方法赋给b调用。
aa.apply(b); //相当于b.aa(),将aa()方法赋给b调用。
 
 


patientsDirection = [{ name: '入病房', clickstatus: false }, { name: '走廊', clickstatus: false },
{ name: '补液室', clickstatus: false }, { name: '手术室', clickstatus: false },
{ name: 'DSA室', clickstatus: false }, { name: '入ICU', clickstatus: false },
{ name: '自动离院', clickstatus: false }, { name: '好转离院', clickstatus: false },
{ name: '死亡', clickstatus: false }, { name: '转院', clickstatus: false },
{ name: '诊室', clickstatus: false }, { name: '留观', clickstatus: false }];


    console.log(typeof patientsDirection,patientsDirection instanceof Array,Object.prototype.toString.call(patientsDirection)==="[object Array]");
    console.log(typeof(Object.prototype.toString.apply([1,2])));