javascript 判斷某個數組中是…

//是否被包含,是返回true,不是返回false

function isContained(a, b){

    if(!(a instanceof Array) || !(b instanceof Array)) return false;

    if(a.length < b.length) return false;

    var aStr = a.toString();

console.info(aStr);

    for(var i = 0, len = b.length; i < len; i++){

console.info(aStr.indexOf(b[i]));

       if(aStr.indexOf(b[i]) == -1) return false;

    }

    return true;

}

(function(){

    var a = [1,2,3,4,5];

    var b = [1,4,3,2];

    var c = [1,6];

    alert(isContained(a,b));//true

    alert(isContained(a,c));//false

})()