Question

I have a function, SWFUpload_config, which takes an argument, post_params_arr – an object.

post_params_arr = {"ajaxtask":"swfupload_files", "param": "2012"}

I need to parse that post_params_arr and dynamically add keys and values to swfu_settings in the following way (please notice that swfu_settings has by default ‘SWFSESSID’ : session_id and all other keys:values must be added from post_params_arr):

function SWFUpload_config (post_params_arr) {
    var swfu_settings = {
        'SWFSESSID' : session_id,
        'ajaxtask' : 'swfupload_files',
        'param' : '2012'
    };
}

How can I achieve that? How would I parse post_params_arr inside swfu_settings where I am assigning keys and values?

Answer 1

The same way you’d access any other object…

var swfu_settings = {
    ajaxtask: post_params_arr.ajaxtask,
    param: post_params_arr.param
};

Or do you mean it’s JSON? If you have jQuery, parse it using jQuery.parseJSON; otherwise, use JSON.parse and fall back on eval('(' + post_params_arr + ')').

---

If you need to shallow-clone the object for some reason, a for in loop will work:

var swfu_settings = {
    SWFSESSID: 'blah'
    // etc.
};

for(var x in post_params_arr) {
    if(post_params_arr.hasOwnProperty(x)) {
        swfu_settings[x] = post_params_arr[x];
    }
}