reflection - Typescript looping trough class type properties -

how can 1 loop through properties of class in typescript? take following class example:

export class task implements itask {         id : number = 0;         name: string;         description: string;         completed: boolean = false;         tasktype: tasktype; } 

im want retrieve properties, hence: ["id", name", "description", "completed", "tasktype"]

tried

    gettaskheaders = () => {         var _self = this;         var thead = $('<thead />').append('<tr />');          for(var i=0; typeof todoapp.task.arguments; i++){              var th = $('<th />');             th.append(todoapp.task.arguments[i]);             thead.append(th);         }          console.log(thead);          return thead;     } 

unfortunately without success, know using "todoapp.task.arguments" incorrect. however, can show me right way please?

let's consider "not defined" properties i.e. properties defined in typescript class (i wrote "not defined" , not undefined reason clear below)

class {      prop1: string    prop2: number  }  

will not enumerated of object.keys or this.hasownproperty(k) since autogen javascript has no knowledge of properties. have 1 option, when create typescript class, initialize properties default values like

class {      prop1: string    prop2: number    prop3: b     constructor() {      this.prop1="";      this.prop2=-1;      this.prop3=null;    }  }  

at point properties of a instance in mapping iteration dictionary

var = new a(); (var in properties) {    if (a.hasownproperty(i)) {       a[i]=properties[i];    } } 

if don't default values solution, can still using magic undefined javascript keyword do:

class {      prop1: string = undefined    prop2: number = undefined  }  

at point javascript counterpart have properties in model , iterate them object.keys(this) or inspect them via this.hasownproperty