1
我有一个非常基本的表单,如果表单有效后单击提交按钮,然后显示操作页面,我想要显示一个加载图像。这里是验证的JavaScript代码:当表单有效时单击提交按钮后显示加载图像
<script type="text/javascript">
function validateForm()
{
valid = true;
if(document.grades.fullName.value == "")
{
alert ("Please fill out your Full Name.");
valid = false;
}
if(document.grades.idNo.value == "")
{
alert ("Please fill out your ID Number.");
valid = false;
}
if(document.grades.pCS.value == "")
{
alert ("Please fill out your grade for Prelim Class Standing.");
valid = false;
}
if(document.grades.pExam.value == "")
{
alert ("Please fill out your grade for Prelim Examination.");
valid = false;
}
if(document.grades.mCS.value == "")
{
alert ("Please fill out your grade for Midterm Class Standing.");
valid = false;
}
if (document.grades.mExam.value == "")
{
alert ("Please fill out your grade for Midterm Examination.");
valid = false;
}
if(document.grades.fCS.value == "")
{
alert ("Please fill out your grade for Finals Class Standing.");
valid = false;
}
if(document.grades.fExam.value == "")
{
alert ("Please fill out your grade for Finals Examination.");
valid = false;
}
return valid;
}
</script>
请别人告诉我有多完全。
“请有人告诉我如何彻底。”对不起,这是不是租编码器 – 2013-08-05 01:34:18
也许这种逻辑可能会帮助你在这里 - [加载图像一旦文件提交点击](http://stackoverflow.com/questions/1715959/loading-image-once-file-submit-clicked ) – woofmeow
请向我们展示您尝试过的代码。 – tb11