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[BBS] Reply.jsp 03

<%@ page language="java" contentType="text/html; charset=gbk"
    pageEncoding="gbk"%>


<%
    int id = Integer.parseInt(request.getParameter("id"));
    int rootId = Integer.parseInt(request.getParameter("rootid"));
%>
<!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=gbk">
<title>Insert title here</title>

<script language="javascript">  //javascript 去空格函数 
    function LTrim(str){ //去掉字符串 的头空格
        var i;
        for(i=0;i<str.length; i++) {
            if(str.charAt(i)!=" ") break;
        }
        str = str.substring(i,str.length);
        return str;
    }
    
    function RTrim(str){
        var i;
        for(i=str.length-1;i>=0;i--){
            if(str.charAt(i)!=" "&&str.charAt(i)!=" ") break;
        }
        str = str.substring(0,i+1);
        return str;
    }
    function Trim(str){
    
        return LTrim(RTrim(str));
    
    }
    
    function check() {
        if(Trim(document.reply.title.value) == "") {
            alert("please intput the title!");
            document.reply.title.focus();
            return false;
        }
        
        if(Trim(document.reply.cont.value) == "") {
            alert("plsease input the content!");
            document.reply.cont.focus();
            return false;
        }
        
        return true;
        
    }
-->
</script>

</head>
<body>
    <form name=reply action="ReplyOK.jsp" method="post" onsubmit="check()">
        <input type="hidden" name="id" value="<%=id%>"> 
        <input type="hidden" name="rootid" value="<%=rootId%>">
        <table border="1">
            <tr>
                <td><input type="text" name="title" size="80"></td>
            </tr>
            <tr>
                <td><textarea cols="80" rows="12" name="cont"></textarea></td>
            </tr>
            <tr>
                <td><input type="submit" value="提交"></td>
            </tr>
        </table>
    </form>
</body>
</html>

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原文地址：https://www.cnblogs.com/robbychan/p/3786849.html