check data type in js
typeof("string"); //string
typeof(123); //number
                                
                            check data type in js
typeof("string"); //string
typeof(123); //number
                                
                            how to use typeof in javascript
console.log(typeof 93);
// Output = "number"
console.log(typeof 'Maximum');
// Output = 'string'
console.log(typeof false);
// Output = "boolean"
console.log(typeof anUndeclaredVariable);
// Output = "undefined"
                                
                            typeof in js
console.log(typeof 93);
// Output = "number"
console.log(typeof 'Maximum');
// Output = 'string'
console.log(typeof false);
// Output = "boolean"
console.log(typeof anUndeclaredVariable);
// Output = "undefined"
                                
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