Question

I am making a jquery post request to obtain a part of the html code from server. There is a file on server get_info.php which prints html code for different requirements. I am using following code to do this :

function check(inf_type) {
    $.ajax({
        type: 'POST',
        url: "get_info.php",
        data: { "sequence_no" : 1 },
        success: function(data) {
            // how can i use value of variable "inf_type" here.
            // here, the variable "data" contains HTML code.
        },
        dataType: 'text'
    });
}

the function check() accepts a parameter inf_type which contains random strings according to which, server recognize the html code to print. Now, i want handle the POST response according to this inf_type.
How can i access the value of inf_type variable in POST response function? The function check() is called more often, thats why i can not put the inf_type variable value in any global variable.
What can i do to achieve that?
Please guide me. thanks in advance.

Answer 1

You can access it via inf_type parameter of the check() function:

function check(inf_type) {
    $.ajax({
        type: 'POST',
        url: "get_info.php",
        data: { "sequence_no" : 1 },
        success: function(data) {
            if (inf_type == 0) {
                // do something with data
            } else {
                // do something else
            }
        },
        dataType: 'text'
   });

}

The reason why this works is because the inner function (success callback) has access to variables in the outer function (check). See this answer for more details: https://stackoverflow.com/a/111200/69868

Edit
This assumes that inf_type is a either a number or a new (different) instance of object in each call of check(). Details are explained in the link mentioned above.