Question

How to check variable type in JavaScript

Answer 1

const b = true; 
const n = 34587;
const s = "javascript";
 
const obj = {
  id: 123,
  name: "tom",
  salary: 12900,
  work: true
}
 
 
console.log(typeof b); 
console.log(typeof n); 
console.log(typeof s); 
console.log(typeof obj); 
console.log(typeof obj.id); 
console.log(typeof X); 
 
    
        
        
        
/*
run:
    
"boolean"
"number"
"string"
"object"
"number"
"undefined"
    
*/
  

 

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