JSFiddle - React, Tailwind, and code Playground

by naveen

HTML

<input type="text" id="c" />

JavaScript

var is={
    Null:function(a){
        return a===null;
    },
    Undefined:function(a){
        return a===undefined;
    },
    nt:function(a){
        return(a===null||a===undefined);
    },
    Function:function(a){
        return(typeof(a)==='function')?a.constructor.toString().match(/Function/)!==null:false;
    },
    String:function(a){
        return(typeof(a)==='string')?true:(typeof(a)==='object')?a.constructor.toString().match(/string/i)!==null:false;
    },
    Array:function(a){
        return(typeof(a)==='object')?a.constructor.toString().match(/array/i)!==null||a.length!==undefined:false;
    },
    Boolean:function(a){
        return(typeof(a)==='boolean')?true:(typeof(a)==='object')?a.constructor.toString().match(/boolean/i)!==null:false;
    },
    Date:function(a){
        return(typeof(a)==='date')?true:(typeof(a)==='object')?a.constructor.toString().match(/date/i)!==null:false;
    },
    HTML:function(a){
        return(typeof(a)==='object')?a.constructor.toString().match(/html/i)!==null:false;
    },
    Number:function(a){
        return(typeof(a)==='number')?true:(typeof(a)==='object')?a.constructor.toString().match(/Number/)!==null:false;
    },
    Object:function(a){
        return(typeof(a)==='object')?a.constructor.toString().match(/object/i)!==null:false;
    },
    RegExp:function(a){
        return(typeof(a)==='function')?a.constructor.toString().match(/regexp/i)!==null:false;
    }
};
 
var type={
    of:function(a){
        for(var i in is){
            if(is[i](a)){
                return i.toLowerCase();
            }
        }
    }
};


var a= [];
var b ={};
var c = document.getElementById("c");
var d = function(){};
var e = "";
alert(type.of(a));
alert(type.of(b));
alert(type.of(c));
alert(type.of(d));
alert(type.of(e));