在jQuery中通过键名从数组获取值

Question

I have One Program where i get information contains in array and i want to aceess it with using key.

Is there any Way for this ?

Here are code example :

jQuery("#sl_name").change(function(){
    var id = this.value;
    jQuery.ajax({
        url : 'insert.php',
        type:'post',
        data:{'action': 'getById','id':id},
        success : function(data){
            alert(data);
        }
    });

});

Here variable Data contain array of user i need to access by key value like in php we can get.

If you are return print_r than use json_encode method.

Thanks In Adavance.

Answer 1

don't use alert to debug objects, you will always get [Object object] , use console.log instead:

jQuery("#sl_name").change(function () {
    var id = this.value;
    jQuery.ajax({
        url: 'insert.php',
        type: 'post',
        data: {
            'action': 'getById',
            'id': id
        },
        success: function (data) {
            console.log(data);

            //if data is not yet a json object
            data = JSON.parse(data);

            //To access by key/prop
            console.log(data.username);

            //if data is an array:
            for (var i = 0; i < data.length; i++) console.log(data[i]);
        }
    });
 });