Nodejs Number Type Check isNumber(value)

Here you can find the source of isNumber(value)

Method Source Code

function isNumber(value){
   var text = /^[0-9]*$/;
   return text.test(value);
}

Related

  1. isNumber()
    var assert=require('assert');
    var Number=function(number){
        this.number = number;
    Number.prototype.isNumber=function(){
        return isNaN(this.number);
    Number.prototype.isEven=function(){
        return this.number%2==0;
    ...
    
  2. isNumber()
    Number.prototype.isNumber = function()
      try
        var value = this.toString();
        value = value.replace(",","");
          if (parseFloat(value)!= value)
            return false;
          else
    ...
    
  3. isNumber(input)
    function isNumber(input) {
        return typeof input === "number" ? true : false;
    
  4. isNumber(n)
    function isNumber(n) {
       return typeof n == 'number';
    
  5. isNumber(n)
    function isNumber(n) 
      return !isNaN(parseFloat(n)) && isFinite(n);
    
  6. isNumber()
    Object.prototype.isNumber = function (){
       return typeof this.valueOf() === 'number' ;
    };