Nodejs Utililty Methods String Delete

String.prototype.delete=function() {
  for(var e in arguments) {
    console.log(typeof arguments[e]);
    this.replace(arguments[e],'');
    console.log(this);
  return this.valueOf();
console.log("Hello World123".delete(/h/gi, /[0-9]/g));
...

String.prototype.delete = function () {  
  var str = this.toString();
  for(let i = 0; i < arguments.length; i++) {
    switch(typeof arguments[i]) {
      case 'string':    
        str = str.replace(new RegExp(arguments[i], 'g'), "");
        break;
      case 'object':
        str = str.replace(arguments[i], "");    
...

String.prototype.delete = function(remove) {
 var result= '';
 for(var i=0;i<this.length;i++) {
    for (var j=0;j<remove.length;j++) {
    if(this.charAt(i) != remove.charAt(j)) {
        result += this.charAt(i)
 return result
console.log("Hello World".delete('o'))