Question

In my application I have a javascript function like below.

var params = {};
function getMethod(art) {
    if (art == 'artwork') {
        params['type'] = 'paper art';
    }
    params['medium'] = 'canvas';
    params['entity'] = 'paper';
}

This function is working fine in Firefox. But Its failing in IE and Chrome.
Its breaking on params[‘type’]
giving error params is undefined.
Any idea what mistake I am doing here.

Answer 1

here is how i would use it:

var params = {};
function getMethod(art) {
    if (art == 'artwork') {
        params.type = 'paper art';
    }
    params.medium = 'canvas';
    params.entity = 'paper';
}

// ... later
getMethod("not art");

// check if it is defined before using it
if (params.type && params.type == 'artwork') {
   // do artwork stuff
}