Answers for "javascript to check variable type"

14

javascript how to know type of variable

var foo = "Hello";
console.log(typeof foo); // string
Posted by: Guest on February-20-2020
6

javascript find type of variable

> typeof "foo"
"string"
> typeof true
"boolean"
> typeof 42
"number"

if(typeof bar === 'number') {
   //whatever
}
Posted by: Guest on May-16-2020
19

type 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
}
Posted by: Guest on April-02-2020
1

node js check type of variable

if (typeof i != "number") {
    console.log('This is not number');
}
Posted by: Guest on April-03-2020

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