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input能验证,下拉框怎么验证用户没有选择!俺是菜鸟,希望大牛们指点下该怎么写HTML
认证高级PHP讲师
这个插件可以添加自定义方法addMethod,具体的可以看下API。
这个插件可以添加自定义方法addMethod,具体的可以看下API。