我有输入时在同一文本框上计算的文本框。我想要的是将它们全部添加到最终结果中。我尝试过使用旧功能。这是它的外观:
function compute(){
var quiz = document.getElementById('quiz').value;
var recitation = document.getElemenById('recitation').value;
var homework = document.getElementById('homework').value;
var seatwork = document.getElementById('seatwork').value;
var activities = document.getElementById('activities').value;
var exams = document.getElementById('exams').value;
var project = document.getElementById('project').value;
var total = document.getElementById('total').value;
var grade = quiz+recitation+homework+seatwork+activities+exams+project;
total.value = grade;
}
我在每个文本框上都放了oninput =“compute()”。但它没有互动。可能是我的错误?功能是否会在某一时刻发生碰撞?
编辑:我已经创建了一个测试页面。基本相同。你走了:
<!DOCTYPE html>
<head>
<script src="http://code.jquery.com/jquery-1.11.1.min.js"></script>
<title>Test</title>
</head>
<body>
<input id="first" type="text" onchange="compute()">
<script>
$('#first').on('change', function() {
$(this).val($(this).val() * 3);
});
</script>
<input id="second" type="text" onchange="compute()">
<script>
$('#second').on('change', function() {
$(this).val($(this).val() * 3);
});
</script>
<input id="result" type="text" readonly>
<script>
function compute(){
var myBox1 = document.getElementById('first').value;
var myBox2 = document.getElementById('second').value;
var result = document.getElemetById('result').value;
var grade = first + second;
total.value = grade;
}
</script>
</body>
</html>
答案 0 :(得分:1)
onChange="compute();"
你试过吗?
修改:您可能还需要将total.value = grade;
更改为total = grade;
或类似的内容。我相信这个函数写得有点简单,但我不知道你的完整代码。