Question

I need a function to check whether a function in jQuery exists and if that’s true this function should be called. If I use below code with an simple name it works, but if i want to check dynamically whether a function exists it doesn’t work. Have anybody an idea?

function homeController() {
    console.log('in the homecontroller');
}

$('div[class="view"]').each(function() {
        $('#' + this.id).live('pageshow', function() {
            var func = this.id + 'Controller';              
            if($.isFunction(func)) {
                console.log('jquery exists');
            }
        });
    });

Answer 1

Use the jQuery.isFunction() method to check whether an object is a function or not.

$('div[class="view"]').each(function() {
        $('#' + this.id).live('pageshow', function() {
            var func = eval(this.id + 'Controller');              
            if($.isFunction(func)) {
                console.log('jquery exists');
            }
        });
    });