//jquery数组遍历    var arr = [1,2,3];    $.each(arr, function(i,val){       console.log(i);        console.log(val);    });
    0,1
    1,2
    2,3

    //js数组遍历 5中    var numbers = [1,2,3,4,5,6];    var everyResult = numbers.every(function(item,index,array){        console.log(item);        console.log(index);        console.log(item);        return item;    });    everyResult();

    //jquery包装器的遍历    $(‘.content-hot-slider input‘).each(function(){        var text = $(this).val();        if (/^[\u4e00-\u9fa5]{1,4}$/.test(text)) {            check[i] = true;        }        else {            check[i] = false;        }    });