老师麻烦帮我检查一下我哪里错了谢谢
来源：4-14 项目作业
寿限无的丸子
2022-03-29 00:02:32
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<input type="text" id="num1">
<select id="operate">
<option value="+">+</option>
<option value="-">-</option>
<option value="*">*</option>
<option value="/">/</option>
</select>
<input type="text" id="num2">
<input type="button" id="btn" value="=">
<input type="text" id="result">
<script>
var num1 = document.getElementById('num1');
var operate = document.getElementById('operate');
var num2 = document.getElementById('num2');
var btn = docuemnt.getElementById('btn');
var result = document.getElementById('result');
btn.onclick = function(){
if(operate.value == '+'){
result.value = Number(num1.value) + Number(num2.value);
}
else if(operate.value == '-'){
result.value = Number(num1.value) - Number(num2.value);
}
else if(operate.value == '*'){
result.value = Number(num1.value) * Number(num2.value);
}
else if(operate.value == '/'){
result.value = Number(num1.value) / Number(num2.value);
}
};
</script>
</body>
</html>还有个问题是运算的部分能这样写吗？
result.innerText = Number(num1.innerText) + Number(num2.innerText);
写回答
1回答
-
好帮手慕小李
2022-03-29
同学你好，document拼写错啦，如下：
运算的写法没有问题，棒棒的！
同学自己把错误改过来啊，祝学习愉快！
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