Function prototype: Difference between revisions
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=={{header|JavaScript}}== |
=={{header|JavaScript}}== |
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JavaScript does use function prototypes, it doesn't care the type of function, only that it is indeed a function. |
JavaScript does use function prototypes, it doesn't care the type of function, only that it is indeed a function. |
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<lang JavaScript> |
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<lang JavaScript>var randomFunction=function(a){this.someNumber=a;}; //Doesn't matter when the function uses parameters, named arguments, no arguments, or if it doesn't return nothing at all. |
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randomFunction.prototype.getSomeNumber=function(){return this.someNumber;} |
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ents |
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randomFunction.prototype.setSomeNumber=function(a){return this.someNumber=a;}//editing prototype explicitly |
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function List() {} |
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(new randomFunction(7)).getSomeNumber();//7</lang> |
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List.prototype.push = function() { |
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[].push.apply(this, arguments); |
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return this.length; |
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}; |
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List.prototype.pop = function() { |
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return [].pop.call(this); |
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}; |
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var l = new List(); |
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l.push(5); |
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l.length; // 1 |
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l[0]; 5 |
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l.pop(); // 5 |
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l.length; // 0 |
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// A prototype declaration for a function that utilizes varargs |
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function List() { |
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this.push.apply(this, arguments); |
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} |
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List.prototype.push = function() { |
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[].push.apply(this, arguments); |
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return this.length; |
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}; |
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List.prototype.pop = function() { |
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return [].pop.call(this); |
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}; |
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var l = new List(5, 10, 15); |
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l.length; // 3 |
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l[0]; 5 |
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l.pop(); // 15 |
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l.length; // 2 |
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</lang> |
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=={{header|PARI/GP}}== |
=={{header|PARI/GP}}== |
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