js check type of variable code example
Example 1: javascript how to know type of variable
var foo = "Hello";
console.log(typeof foo);
Example 2: check type javascript
console.log(typeof "how are you?")
"string"
console.log(typeof false) / console.log(typeof true)
"boolean"
console.log(typeof 100)
"number"
Example 3: type of javascript
if (typeof(value) !== "undefined") {
}
Example 4: check data type in javascript
typeof("string");
typeof(123);
Example 5: how to get type of variable in javascript
> typeof "foo"
"string"
> typeof true
"boolean"
> typeof 42
"number"
Example 6: javascript check type of variable var
> typeof "foo"
"string"
> typeof true
"boolean"
> typeof 42
"number"