代码总结：顶或踩功能的单次性和限时性

ゝ一纸荒年。 2022-05-13 07:48 45阅读 0赞

*  需求：如下页面，一条问题记录对应多条回答记录，用户不登录无法顶或踩，且当前登录用户只能对某一个问题，或某一个回答顶或踩一次，当然同一问题下的不同回答，也各只能顶或踩一次，最好加上时间限制，规定多久后又可以点赞。
 *  情况：最初我用的cookie，便于操作，这肯定不合适，但一时没想到别的方式。总体的思路是：对问题顶或踩后拼接用户id和问题id；对问题的某条回答顶或踩后拼接用户id和回答id，每次顶或踩操作前验证其是否包含

<div class="vote_collect_wrapper">
        <div class="vote_collect">
        <a class="vote_up" title="顶" id="qup" count="0"> </a>
        <span id="questionVoteCount" class="vote_count" data="${loginer.id}" qdata="${qInfo.qid}">${qInfo.votes}</span>
        <a class="vote_down" title="踩" id="qdn" count="0"> </a>
        </div>
        <script type="text/javascript"> $("#qup").click(function(){ var currentId = $("#questionVoteCount").attr("data"); if(currentId == ""){ alert("请先登录"); return; } var qid = $("#questionVoteCount").attr("qdata"); var currentVotes = $("#questionVoteCount").html(); var status = $.cookie("voteQuestion"); if(status == undefined || status.indexOf(currentId+qid) == -1){ //cookie里voteUserId为空，或者voteUserId里不包含当前用户id，就可以投票 $("#questionVoteCount").html(parseInt(currentVotes)+1); $.ajax({ url:"vote.do", data: { "change":"up","qid":qid,"votes":currentVotes}, type: "post", }); $.cookie("voteQuestion",status+","+currentId+qid,{expires:30}); }else{ alert("大侠，你已投过票了\n小提示：同一个用户ID在30天内不能重复此操作"); } }); $("#qdn").click(function(){ var currentId = $("#questionVoteCount").attr("data"); if(currentId == ""){ alert("请先登录"); return; } var qid = $("#questionVoteCount").attr("qdata"); var currentVotes = $("#questionVoteCount").html(); var status = $.cookie("voteQuestion"); if(status == undefined || status.indexOf(currentId+qid) == -1){ //cookie里voteUserId为空，或者voteUserId里不包含当前用户id，就可以投票 vote = parseInt(currentVotes)-1; if(vote > 0){ $("#questionVoteCount").html(vote); }else{ $("#questionVoteCount").html(0); } $.ajax({ url:"vote.do", data: { "change":"dn","qid":qid,"votes":currentVotes}, type: "post", }); $.cookie("voteQuestion",status+","+currentId+qid,{expires:30}); }else{ alert("大侠，你已投过票了\n小提示：同一个用户ID在30天内不能重复此操作"); } }); </script>
    </div>

<article class="answer_detail" data="${ar.supports}" time="${ar.rspTime}">
                        <div class="vote_collect_wrapper">
                            <div class="vote_collect">
                                <a class="vote_up" title="顶" onclick="up(${vs.index},${ar.aid},${loginer.id})"> </a>
                                <span class="vote_count" id="count${vs.index}">${ar.supports}</span>
                                <a class="vote_down" title="踩" onclick="down(${vs.index},${ar.aid},${loginer.id})"> </a>
                            </div>
                        </div>
                        <div class="answer-content-detail">
                            <section>
                            <p>
                                ${ar.content}
                            </p>
                            </section>
                        </div>
                        <div class="userdetail">
                            <div class="userinfo">
                                <span class="uname">${ar.nickName}</span>
                                <span class="edittime">${ar.rspTime}</span>
                            </div>
                            <div>
                                <img src="img/photo/${ar.photo}" />
                            </div>
                        </div>
                        </article>
                        </c:forEach>
                        
                        <script> function up(p1,p2,p3){ //本来只用传下面三个参数，修改数据库 var id = "#count"+p1; var aid = p2; var currentVotes = $(id).html(); //我通过cookie的方式防止同一个用户，通过刷新频繁操作投票 var currentId = p3;//当前用户id if(p3 == undefined){ alert("请先登录"); return; } var status = $.cookie("voteAnswer"); if(status == undefined || status.indexOf(currentId+""+aid) == -1){ $(id).html(parseInt(currentVotes)+1); $.ajax({ url:"voteans.do", data:{ "change":"up","aid":aid,"votes":currentVotes}, type:"post", success:function(){ } }); $.cookie("voteAnswer",status+","+currentId+aid,{expires:30}); }else{ alert("大侠，你已投过票了\n小提示：同一个用户ID在30天内不能重复此操作"); } } function down(p1,p2,p3){ //本来只用传下面三个参数，修改数据库 var id = "#count"+p1; var aid = p2; var currentVotes = $(id).html(); //我通过cookie的方式防止同一个用户，通过刷新频繁操作投票 var currentId = p3;//当前用户id if(p3 == undefined){ alert("请先登录"); return; } var status = $.cookie("voteAnswer"); if(status == undefined || status.indexOf(currentId+""+aid) == -1){ vote = parseInt(currentVotes)-1; if(vote > 0){ $(id).html(vote); }else{ $(id).html(0); } $.ajax({ url:"voteans.do", data:{ "change":"dn","aid":aid,"votes":currentVotes}, type:"post", success:function(){ } }); $.cookie("voteAnswer",status+","+currentId+aid,{expires:30}); }else{ alert("大侠，你已投过票了\n小提示：同一个用户ID在30天内不能重复此操作"); } } </script>