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我想驗證表單上提交和相同的點擊如果表單填寫正確比調用add()函數。我不是高級用戶,所以請保持簡單,如果還有其他方法可以做到這一點,我將不勝感激。我需要幫助來調用添加()函數,並驗證函數,所以首先它將驗證並添加
這裏是我的代碼:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
</head>
<body>
<script>
function validate() {
var x = document.forms["myform"]["fnum"].value;
var y = document.forms["myform"]["snum"].value;
if(x=="" || x ==null){
alert("Please Enter the ist Number");
return false;
}
if(y=="" || y== null){
alert("Please Enter the 2nd Number");
return false;
}
}
function add(){
var x = document.forms["myform"]["fnum"].value;
var y = document.forms["myform"]["snum"].value;
x=parseInt(x);
y=parseInt(y);
var sum = x +y;
document.write(sum);
}
</script>
<form name="myform" onSubmit="return validate()">
First Number: <input type="number" name="fnum">
Second Number : <input type="number" name="snum">
<input type="submit" value="submit">
</form>
</body>
</html>