JavaScript JSON对象解码

Question

I am new to JSON and AJAX and was hoping someone could help me out here.

Using an AJAX request to a PHP script, I get some data from SQL database -> encoded as JSON string and sent it back to the calling javascript.

This is the data i get back

Array[{"categoryName":"Apartments For Rent"},{"categoryName":"Apartments For Sale"},{"categoryName":"Room For Rent (Shared)"},{"categoryName":"Paying Guest"},{"categoryName":"Office\/Shop\/Commercial Space"},{"categoryName":"Land"},{"categoryName":"Parking Spots"},{"categoryName":"Other"}]

How can I get the individual 'CategoryName' values from this (in a while loop)?

EDIT : PHP CODE THAT SENDS THE JSON DATA

    $arr = array();
    while($row = mysql_fetch_array($temp,MYSQL_ASSOC))
    {
        $arr[]=$row;
    }
    echo json_encode($arr);

Thank you for the help
Ankit

Answer 1

You could loop through the array and access individual elements by their index:

for (var i = 0; i < data.length; i++) {
    alert(data[i].categoryName);
}