<script type="text/javascript">
var validate = (function() {
var reClass = /(^|\s)required(\s|$)/; // Field is required
var reValue = /^\s*$/; // Match all whitespace
return function (form) {
var elements = form.elements;
var el;
var amount = document.forms["myForm"]["amount"].value;
var quantity = document.forms["myForm"]["quantity"].value;
for (var i=0, iLen=elements.length; i<iLen; i++) {
el = elements[i];
if (reClass.test(el.className) && reValue.test(el.value)) {
// Required field has no value or only whitespace
// Advise user to fix
alert('Please fix ' + el.name);
return false;
}
}
if (amount == null || amount == "" || isNaN(amount)) {
alert("Total Amount must be only numbers");
return false;
}
else if (quantity == null || quantity == "" || isNaN(quantity)) {
alert("Quantity must be only numbers");
return false;
}
else{
confirm("Confirm Order Submission ?");
}
}
}());
</script>
这是一个使用"required" id进行强制输入字段验证的表单验证脚本,效果很好。我只想在最后一个else if语句后加一个确认提示框,我尝试使用confirm(),但即使我点击“取消”,表单仍然会被提交。