How to declare array of specific type in javascript

var StronglyTypedArray=function(){      this.values=[];      this.push=function(value){      if(value===0||parseInt(value)>0) this.values.push(value);      else return;//throw exception     };     this.get=function(index){        return this.values[index]     }   }

EDITS: use this as follows

     var numbers=new StronglyTypedArray();     numbers.push(0);     numbers.push(2);     numbers.push(4);     numbers.push(6);     numbers.push(8);     alert(numbers.get(3)); //alerts 6

Array of specific type in typescript

export class RegisterFormComponent {     genders = new Array<GenderType>();     loadGenders()     {        this.genders.push({name: "Male",isoCode: 1});        this.genders.push({name: "FeMale",isoCode: 2});     }}type GenderType = { name: string, isoCode: number };    // Specified format

If simply you want to restrict user to push values as per first value entered you can use below code

var stronglyTypedArray =  function(type) {this.values = [];this.typeofValue;this.push = function(value) {   if(this.values.length === 0) {     this.typeofValue = typeof value;     this.pushValue(value);     return;      }    if(this.typeofValue === typeof value) {       this.pushValue(value);    } else {        alert(`type of value should be ${this.typeofValue}`)    }}this.pushValue = function(value) {     this.values.push(value);}

}

If you want to pass your own type, you can customize the above code a bit to this

var stronglyTypedArray =  function(type) {this.values = [];this.push = function(value) {    if(type === typeof value) {       this.pushValue(value);    } else {        alert(`type of value should be ${type}`)    }}this.pushValue = function(value) {     this.values.push(value);}

}