easyui--验证表单提交后才开始验证的方法--form

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<form id="ff" method="post">
<input class="easyui-validatebox" id="vv2" type="text" name="email" ></input>
<div style="text-align:left;padding:5px">
<a href="javascript:void(0)" class="easyui-linkbutton" onclick="submitForm()">Submit</a>
</div>
</form>
<script>
function submitForm(){
$('#vv2').validatebox({
required: true,
validType: 'email'
});
$('#ff').form('submit');
}
</script>

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