代码如下: <!DOCTYPE html PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN” “http://www.w3.org/TR/html4/loose.dtd”> <html> <head> <meta http-equiv=”Content-Type” content=”text/html; charset=UTF-8″> <title>表单验证</title> [removed] function check_1(param){//不为空 if(param==””||param==null){r
