JavaScript
x
17
17
1
function button(){2
text1 = 43
var rand1 = Math.floor(Math.random() * text1);4
var rand2 = Math.floor(Math.random() * text1);5
var answer1 = rand1 + '+' + rand2;6
var html = rand2 + '+' + rand17
document.write(html)8
}9
function check(rand1, rand2){10
var text11 = document.getElementById('id').value;11
var answer = rand1 + rand2;12
if(answer == text11) {13
document.write('correct!')14
}15
}16
17
button()JavaScript
1
2
1
<input type="text" id="id">2
<button onclick="check()"> check </button>I want my code to create simple equations. You can put in answers and it tells you if you are correct or not. When I run this simple code, input the right answer and click on check, it doesn’t show correct. why is this and how can I fix?
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Answer
In your code, check() requires two arguments rand1 and rand2, which you are not passing while calling it from onclcik.
Following code should work, check it…
JavaScript
1
25
25
1
<html>2
<body>3
4
<script>5
function button(){6
text1 = 47
var rand1 = Math.floor(Math.random() * text1);8
var rand2 = Math.floor(Math.random() * text1);9
var answer1 = rand1 + '+' + rand2;10
var html = rand2 + '+' + rand111
document.write(html)12
return rand1 + rand2;13
}14
function check(){15
var text11 = document.getElementById('id').value;16
if(answer == text11) {17
document.write('correct!')18
}19
}20
var answer = button()21
</script>22
<input type="text" id="id">23
<button onclick="check()"> check </button>24
</body>25
</html>