I have something like this:
var functions = ['function1','function2','function3'];
How would I run a certain function?
function[0];
Ideally I would like to use a count of some sort to call a function individually. I am able to get the correct output but it does not actually execute the function.
Thanks!
var array_of_functions = [
first,
second,
third,
forth
]
and call like
array_of_functions[count](parameters);
example
array_of_functions[0]();
or
array_of_functions[0]('string');
JSFIDDLE DEMO: http://jsfiddle.net/mzxCk/
Like this:
window[functions[0]]();
//^---------- use index here
Use bracket notation to get the function name and call it by ().
This answer assumes that you have those functions with those names in global scope.
You also need to consider calling scope, which is why you should be using call or apply depending on whether you're passing your arguments as separate objects or an array see here for a description of both.
If your functions contains a collection of strings, you'll need to invoke them (with args) like this (note the this as the first param of call, this is the scope the function will run under, so in this case window):
var func1 = function (msg) {
document.write("func1 called with message - " + msg + ".");
};
var functions = ['func1', 'func2'];
window[functions[0]].call(this, 'here is a message');
If functions contains a collection of Function then you need to call them like this:
var functions = [
function (msg) {
document.write("func1 called with message - " + msg + ".");
},
function (msg) {
document.write("func2 called with message - " + msg + ".");
}];
functions[0].call(this, 'here is a message');
