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JavaScript - how to get object's methods?
1 answers
0 points
Is there a method or property to get all methods from an object?
I need something like this:
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var myObject = {};2
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myObject.prototype.method1 = function() {};4
myObject.prototype.method2 = function() {};5
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myObject.getMethods(); // Expected output: ['method1', 'method2']; 1 answer
0 points
With the solution below you can get all methods that are non-static or defined by user if you know the type or if you have an object that is based on some type (e.g. new Object or class created with function()).
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function collectMethods(methods, object) {2
var keys = Object.keys(object);3
for (var i = 0; i < keys.length; ++i) {4
var key = keys[i];5
if (key !== 'constructor' && typeof object[key] === 'function') {6
methods.push(key);7
}8
}9
}10
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function getMethods$1(object, methods) {12
if (methods == null) {13
methods = [];14
}15
var prototype = Object.getPrototypeOf(object);16
if (prototype) {17
getMethods$1(prototype, methods);18
collectMethods(methods, prototype);19
}20
return methods;21
}22
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function getMethods$2(clazz, methods) {24
if (methods == null) {25
methods = [];26
}27
var prototype = clazz.prototype;28
if (prototype) {29
getMethods$1(prototype, methods);30
collectMethods(methods, prototype);31
}32
return methods;33
}34
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// Usage example:37
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function ParentClass() {}39
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ParentClass.prototype.a = function() {};41
ParentClass.prototype.b = function() {};42
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function SomeClass() {}44
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SomeClass.prototype = new ParentClass(); // inheritance from ParentClass46
SomeClass.prototype.c = function() {};47
SomeClass.prototype.d = function() {};48
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var someObject = new SomeClass();50
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console.log(getMethods$1(someObject));52
console.log(getMethods$2(SomeClass));0 commentsShow commentsAdd comment
