We are required to write a JavaScript program that provides user with a input. When the user inputs some value and press the button, our function should check if the input is a valid number,if it is a valid number, the program should print all digits of the number separately to the screen.
For example − If the input is −
43354
Then the output on the screen should be −
4 3 3 5 4
Let us write the code for this function −
The code for this will be −
HTML
<!DOCTYPE html> <html> <head> <meta charset="utf−8"> <meta name="viewport" content="width=device−width"> <title>Digits</title> </head> <body> <div class="column1"> <div class="input"> <button onclick="perform()"> Enter number </button> </div> <strong><div id="output"> </div></strong> </div> </body> </html>
JS
function perform() {
var outputObj = document.getElementById("output");
var a = parseInt(prompt("Please enter a number: ", ""));
var digit = "";
outputObj.innerHTML = ""
while(a > 0){
let num = a%10
a = Math.floor(a/10)
digit += "<p>"+num+"</p>"
}
outputObj.innerHTML = digit;
document.getElementsByTagName("button")[0].setAttribute("disabled","true");
}And the output on the screen will be −
After clicking OK button,
