微信小程序> js写的心愿墙小程序-模拟数据库获取数据

js写的心愿墙小程序-模拟数据库获取数据

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这个练习是看网上的视频自己又写了一遍,对一些知识点进行的总结,从基础到高级都有讲解,有需要的可以看一下。

!DOCTYPE htmlhtml lang="en"head    meta charset="UTF-8"    title心愿墙/title    style        body{            margin: 0px auto;            padding: 0px;            font-size: 12px;            background: url("images/bg.gif") repeat center 36px;            text-align: center;            background-color: #c30230;        }        #content{            margin: 0px auto;            width: 960px;            background: url("images/content_bg.jpg") no-repeat left top;            height: 627px;            position: relative;        }        #content .tip1, #content .tip2, #content .tip3, #content .tip4, #content .tip5, #content .tip6, #content .tip7, #content .tip8{            position: absolute;            width: 227px;            left: 200px;            top: 100px;        }        #content .tip1 .tip_h{            background: url("images/tip1_h.gif") no-repeat left top;        }        #content .tip1 .tip_h, #content .tip2 .tip_h, #content .tip3 .tip_h, #content .tip4 .tip_h, #content .tip5 .tip_h, #content .tip6 .tip_h, #content .tip7 .tip_h, #content .tip8 .tip_h{            width: 227px;            height: 23px;            padding-top: 45px;            text-align: center;            cursor: pointer;        }        #content .tip1 .tip_c{            background: url(images/tip1_c.gif) repeat-y;        }        #content .tip1 .tip_c, #content .tip2 .tip_c, #content .tip3 .tip_c, #content .tip4 .tip_c, #content .tip5 .tip_c, #content .tip6 .tip_c, #content .tip7 .tip_c, #content .tip8 .tip_c{            width: 200px;            padding-left: 12px;            padding-right: 15px;            min-height: 40px;            text-align: left;            line-height: 20px;            max-height: 160px;            word-wrap: break-word;            word-break: break-all;            overflow: hidden;        }        #content .tip1 .tip_f {            background: url(images/tip1_f.gif) no-repeat left top;        }        #content .tip1 .tip_f, #content .tip2 .tip_f, #content .tip3 .tip_f, #content .tip4 .tip_f, #content .tip5 .tip_f, #content .tip6 .tip_f, #content .tip7 .tip_f, #content .tip8 .tip_f {            width: 227px;            height: 53px;            padding-top: 20px;        }        #content .close, #content .close2 {            float: left;            font-size: 12px;            cursor: pointer;            color: #000000;        }        .clr {            clear: both;            overflow: auto;            display: block;            height: 0px;        }        #content .icon {            float: left;            width: 35px;            padding-left: 15px;            height: 35px;            text-align: center;        }        #content .name {            float: right;            padding-right: 15px;            text-align: right;            font-size: 14px;            line-height: 35px;            color: #C0F;        }        #content .num {            float: left;            padding-left: 7px;            width: 195px;        }    /style/headbody    div id="content"   /div!-- !–整个页面–--  script      // 模拟数据库获取信息      var messages = [          {"id":1,"name":"mahu","content":"今天你拿苹果支付了吗?","time":"2016-02-17 00:00:00"},          {"id":2,"name":"haha","content":"今天天气不错,风和日丽的","time":"2016-02-18 12:40:00"},          {"id":3,"name":"jjjj","content":"常要说的事儿是乐生于苦","time":"2016-03-18 12:40:00"},          {"id":4,"name":"9.8的妹纸","content":"把朋友家厕所拉堵了 不敢出去 掏了半小时了都","time":"2016-03-18 12:40:00"},          {"id":5,"name":"雷锋ii.","content":"元宵节快乐","time":"2016-02-22 12:40:00"},          {"id":6,"name":"哎呦哥哥.","content":"据说今晚央视的元宵晚会导演和春晚导演是同一个人,真是躲得过初一,躲不过十五。","time":"2016-02-22 01:30:00"},          {"id":7,"name":"没猴哥,不春晚","content":"班主任:“小明,你都十二岁了,还是三年级,不觉得羞愧吗”?。小明:“一点也不觉得,老师你都四十多岁了,不也是年年在三年级混日子吗?羞愧的应该是你”。老师:……","time":"2016-02-22 01:30:00"},          {"id":8,"name":"哎呦杰杰.","content":"真搞不懂你们地球人,月亮有什么好看的,全是坑,还是对面那哥们好看,","time":"2016-02-22 01:30:00"},          {"id":9,"name":"哎呦哎呦","content":"今天哪里的烟花最好看!!?答:朋友圈。。。","time":"2016-02-22 02:30:00"}      ];      //获取相关元素      var content = document.getElementById("content");      //循环生成div标签,然后为innerHTML属性添加内容      for(var i=0;imessages.length;i++){          var newDiv = document.createElement("div");          //绑定类名和ID          newDiv.className = "tip1";          newDiv.id = "tip"+ messages[i].id;            //改变位置          var topValue = parseInt(Math.random()*400);          var leftValue = parseInt(Math.random()*700);          newDiv.style.top = topValue + "px";          newDiv.style.left = leftValue + "px";          //赋值内容          newDiv.innerHTML = 'div class="tip_h" title="双击关闭纸条"'+                              'div class="num"第[49568]条 '+messages[i].time+'/div'+                              'div class="close" title="关闭纸条" ×/div'+                              'div class="clr"/div'+                              '/div'+                              'div class="tip_c"'+                              messages[i].content+                              '/div'+                              'div class="tip_f"'+                              'div class="icon"'+                              'img src="images/bpic_1.gif" alt="小程序" title=""'+                              '/div'+                              'div class="name"'+messages[i].name+'/div'+                              'div class="clr"/div'+                              '/div';          //把新元素放到content中          content.appendChild(newDiv);          //绑定事件,提高层级          newDiv.onclick = fn;          //点击关闭按钮的时候关闭父盒子          var closeDiv = newDiv.getElementsByClassName("close")[0];          closeDiv.onclick = function () {              content.removeChild(this.parentNode.parentNode);          }          //双击关闭按钮类名叫做tip_h          var dbDiv = newDiv.getElementsByClassName("tip_h")[0];          dbDiv.ondblclick = function () {              //不能用newDiv,因为在页面加载的时候newDiv,已经变成最后一个了,当你点击的时候,用远关闭的是最后的那个div。//                content.removeChild(newDiv);              content.removeChild(this.parentNode);          }      }      var index = 1;      function fn(){          this.style.zIndex = index;          index++;      }  /script/body/html

运行效果如下:

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