I wanna make a simple app ..could somone help plz?

Question

i wanna make an app that gives me a prompt("enter a number>0") and when i enter a number<0 (a wrong answer) the code just give me that prompt("try again"), and if i answerd wrong for any number of times it just give me this prompt("try again"), what should i do?

Answer 1

Try this :

window.onload = function main() {
var num = prompt("Enter a number > 0") ; // Takes input from user
if (num > 0) {
alert("Good job!") ;
} // If the number is > 0, alert pops up
else {
error() ;
} // If no, this function is executed
}
// Below is the function

function error() {
var num2 = prompt("Number must be greater than 0!") ;
if (num2 > 0) {
alert("Good job!") ;
}
else {
error() ;
} // Recursive function
}

Answer 2

Use HTML form where action method connected to OnClick should check the given value if its correct and if not, just display prompt on active screen.

Answer 3

while loop would be good here to allow you to enter until an exit condition is met allowing the user to try different values without having to restart your program

Answer 4

I know a little of java no js

if(x<=0){
Show message
}
else{
Continue
}