这个例程检查表单中的一些域并整理错误，还通过返回false防止表单被提交。
This routine checks some of the fields in the form and collates the errors, and prevents the form from being submitted by returning false.
这个例程检查表单中的一些域并整理错误，还通过返回“false”防止表单被提交。
This routine checks some of the fields in the form and collates the errors, and also prevents the form from being submitted by returning "false".
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