javascript how to know type of variable
var foo = "Hello";
console.log(typeof foo); // stringjavascript how to know type of variable
var foo = "Hello";
console.log(typeof foo); // stringcheck type javascript
console.log(typeof "how are you?")
"string"
console.log(typeof false) / console.log(typeof true)
"boolean"
console.log(typeof 100)
"number"check data type in js
typeof("string"); //string
typeof(123); //numbertype of javascript
//typeof() will return the type of value in its parameters.
//some examples of types: undefined, NaN, number, string, object, array
//example of a practical usage
if (typeof(value) !== "undefined") {//also, make sure that the type name is a string
//execute code
}node js check type of variable
if (typeof i != "number") {
console.log('This is not number');
}javascript check type of variable var
// You can use the built-in method 'typeof' in order to check the variable datatype
//examples:
typeof "hello" // "string"
//or
var a = 1;
typeof(a);
//the output will be > 'number'Copyright © 2021 Codeinu
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