Can I put similar methods in an associative aray like this?
var function_hold = {
function1: function(){}
function2: function (){}
};
If not,
How do I group similar methods?
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1Yes, though strictly speaking it's a stretch to call JavaScript objects "associative arrays". (The property namespace of an object can be "polluted" somewhat through prototypal inheritance effects.)Pointy– Pointy2011-11-07 22:38:08 +00:00Commented Nov 7, 2011 at 22:38
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4 Answers
Similarly as you would with any other object-oriented programming language, you group functionality in objects. This works in JavaScript as well.
Your code actually creates an object. Alternatively you can use JavaScript's prototype mechanism.
var Person = function(firstname, surname){
this.firstname = firstname;
this.surname = surname;
}
Person.prototype.getFullName = function(){
return this.firstname + " " + this.surname;
}
You then call it like
var tom = new Person("Tom", "Jackwood");
tom.getFullName();
Comments
Yes thats possible and works fine.
Best Practice syntax would be the Module Pattern
var outerNamespace = {};
(function(ns) {
// ns is the local name of the object
ns.function1 = function() {}
ns.function2 = function() {}
//self executing anonymous function
} (outerNamespace));
2 Comments
FloydThreepwood
Yes it is, whats the question?
FloydThreepwood
They can be used like classes in other OO-Languages. They simply give you a namespace to operate in.
Yeah, that should would just fine.
Comments
Yes, that will work fine. You can call the functions with function_hold.function1().
Note that normally you'll want to associate data with the functions as well:
var function_hold = {
x: 0,
function1: function(){
this.x++;
}
function2: function(){
alert(this.x);
}
};
