javascript - Get functions (methods) of a class -

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• es6 iterate on class methods 4 answers

i have dynamically fetch properties , functions of es6 class. possible?

using for...in loop, loop through properties of class instance:

class foo {   constructor() {     this.bar = "hi";   }   somefunc() {     console.log(this.bar);   } } var foo = new foo(); (var idx in foo) {   console.log(idx); } 

output:

bar 

this function functions. inherited or not, enumerable or not. functions included.

function getallfuncs(obj) {     var props = [];      {         props = props.concat(object.getownpropertynames(obj));     } while (obj = object.getprototypeof(obj));      return props.sort().filter(function(e, i, arr) {         if (e!=arr[i+1] && typeof obj[e] == 'function') return true;     }); } 

do test

getallfuncs([1,3]);

console output:

["constructor", "tostring", "tolocalestring", "join", "pop", "push", "concat", "reverse", "shift", "unshift", "slice", "splice", "sort", "filter", "foreach", "some", "every", "map", "indexof", "lastindexof", "reduce", "reduceright", "entries", "keys", "constructor", "tostring", "tolocalestring", "valueof", "hasownproperty", "isprototypeof", "propertyisenumerable", "__definegetter__", "__lookupgetter__", "__definesetter__", "__lookupsetter__"]