jquery each学习总结

function eachtest() {
var array = [ [ 12, 33 ], [ 234, 234 ], [ 435, 35 ], [ 123, 456 ] ];
$.each(array, function(i, item) {
alert(item[0]);
});
}

//输出结果为12，234，435，123
function eachtest2(){
var json={key1:1,key2:2,key3:3};
$.each(json,function(key,it){
alert(key);
})

}//输出结果为key1,key2,key3
function eachtest3(){
var json=[{name:"caomin",age:"23",niubi:"true"},{name:"xxx",age:"34",nx:"abc"}];
$.each(json,function(i,item){
alert(json[i].name);
alert(json[i].age);
alert(json[i].niubi);
})
//遍历json格式的结果集：依次输出值： caomin,23,true, xxx,34 ,abc
}