提示后没有任何反应

Question

Sorry, I wasn't clear enough. I need it to list all the numbers from 0 to the number inputted by the prompt into the HTML. I made some suggested changes but now I only get the result for the specific number inputted, not all the numbers up to that number. I am just starting out so please be gentle. Thanks!

$(function() {

  var number = parseInt(prompt("Let me see a number:"));
  var result;

   for(var i = 0; i <= number; i++) {
    if ( i %15 == 0) {
            result = "Ping-Pong";
        }
        else if (i %5 == 0) {
            result = "Pong";
        }
        else if (i %3 == 0) {
            result = "Ping";
        }
        else {
            result = number;
        }
        document.getElementById("show").innerHTML = result;
};

});

Answer 1

You can do either:

for(var i = 0; i <= number; i++) {
 var digit = number[i]; // or any other assigment to new digit var

 if ( digit % 5 == 0) {
        return "Ping-Pong";
    }
.... rest of your code here.

or

 if ( number % 5 == 0) {
        return "Ping-Pong";
    }
.... rest of your code here.

Answer 2

Problem is you did nothing after the return keyword. Also you didn't declared variable as digit . I hope this is what you are looking for.

With loop:

 $(function() { var number = parseInt(prompt("Let me see a number:")); var result; for (var i = 0; i <= number; i++) { if (i % 15 == 0) { // replaced `digit` with `i` result = "Ping-Pong"; } else if (i % 5 == 0) { result = "Pong"; } else if (i % 3 == 0) { result = "Ping"; } else { result = number; } alert(result); } });

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>

Without loop:

 $(function() { var number = parseInt(prompt("Let me see a number:")); var result; if (number % 15 == 0) { // replaced `digit` with `number` result = "Ping-Pong"; } else if (number % 5 == 0) { result = "Pong"; } else if (number % 3 == 0) { result = "Ping"; } else { result = number; } alert(result); });

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>

Answer 3

Ok, I figured it out. For future reference, this is what I was trying to do:

  $(function() {

  var number = parseInt(prompt("Let me see a number:"));
  var i
  var text = "";

for(i = 1; i <= number; i++) {


    if ( i %15 == 0) {
        text += "<br>" + "Ping Pong" + "<br>";
        }
        else if (i %5 == 0) {
        text += "<br>" + "Pong" + "<br>";
        }
        else if (i %3 == 0) {
            text += "<br>" + "Ping" + "<br>";
        }
        else {
            text += "<br>" + i + "<br>";
        }
};
document.getElementById("show").innerHTML = text;

});