get type of var js
function doSomething(x) {
if(typeof(x) === 'string') {
alert('x is a string')
} else if(typeof(x) === 'number') {
alert('x is a number')
}
}get type of var js
function doSomething(x) {
if(typeof(x) === 'string') {
alert('x is a string')
} else if(typeof(x) === 'number') {
alert('x is a number')
}
}javascript find type of variable
> typeof "foo"
"string"
> typeof true
"boolean"
> typeof 42
"number"
if(typeof bar === 'number') {
//whatever
}check data type in js
typeof("string"); //string
typeof(123); //numbercheck data type in js
typeof("iAmAString");//This should return 'string'
//NO camelCase, as it is a JS Keywordjavascript datatypes
dataTypes = {
Numbers = 1,2,3, 100, 3.14
Strings = 'Hello, World' "[email protected]
Boolean = true / false
Null = 'Explicitly set a variable with no Value'
Undefined = 'For variable that have not yet been defined'
Object = 'Complex data structures - Arrays, Dates, Literals etc'
Symbol = 'Used with objects' // usually not needed
}javascript all type of data
let a = ["A", 1, true, [], [2, 'x'],{},{a:'B'}, NaN, undefined, null];
let s = a.toString();
console.log(s);//"A,1,true,,2,x,[object Object],[object Object],NaN,, "Copyright © 2021 Codeinu
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