3
05/11/2024 7:22 pm
トピックスターター
A HTML page holds two text fields "firstNumber" and "secondNumber". Write a JS function to subtract the values from these text fields and display the result in a div named "result".
HTML and JavaScript Code - You are given the following HTML code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Subtraction</title>
</head>
<body>
<div id="wrapper">
<input type="text" id="firstNumber" value="13.33" disabled>
<input type="text" id="secondNumber" value="22.18" disabled>
<div id="result"></div>
</div>
<script src="subtract.js"></script>
<script>
window.onload = function () {
subtract();
}
</script>
</body>
</html>
Implement the above to provide the following functionality:
- Your function should take the values of "firstNumber" and "secondNumber", convert them to numbers, subtract the second number from the first and then write the result in the <div> with id="result"
- Your function should be able to work with any 2 numbers in the inputs, not only the ones given in the example. It may hold other functions in its body.
Examples:
1件の回答
2
05/11/2024 7:23 pm
Here is my solution - with HTML and the JavaScript code inside:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Subtraction</title>
</head>
<body>
<div id="wrapper">
<input type="text" id="firstNumber" value="13.33" disabled>
<input type="text" id="secondNumber" value="22.18" disabled>
<div id="result"></div>
</div>
<script src="subtract.js"></script>
<script>
window.onload = function () {
subtract();
}
</script>
<script>
function subtract() {
let num1 = Number(document.getElementById("firstNumber").value);
let num2 = Number(document.getElementById("secondNumber").value);
let result = num1 - num2;
document.getElementById("result").textContent = result;
}
</script>
</body>
</html>
