原生JS实现多条件筛选
(编辑:jimmy 日期: 2024/12/26 浏览:3 次 )
本文实例为大家分享了原生JS实现多条件筛选的具体代码,供大家参考,具体内容如下
我在学JS初始看到的教程基本都是JS二级联动查询、三级联动查询;如下图:
但有时并不需要级联查询,如购买商品时:
今天我以慕课网前端样式作为参考做了下面的Demo,基于原生JS
<div id="direction"> <strong>方向:</strong> <span class="active">全部</span> <span>前端</span> <span>后台</span> <span>数据库</span> <span>UI设计</span> </div> <div id="category"> <strong>分类:</strong> <span class="active">全部</span> <span>HTML/CSS</span> <span>JavaScript</span> <span>jQuery</span> <span>Python</span> <span>Java</span> <span>AngularJS</span> </div> <div id="type"> <strong>类型:</strong> <span class="active">全部</span> <span>基础</span> <span>案例</span> <span>框架</span> <span>工具</span> </div> <strong>返回值:</strong> <p id="Res"></p>
<style> span{display: inline-block; cursor: pointer; padding: 8px; border: 1px solid #999;} span.active{ background-color: #c14d00; } </style>
<script> var dSpan = document.getElementById('direction').getElementsByTagName('span'); var cSpan = document.getElementById('category').getElementsByTagName('span'); var tSpan = document.getElementById('type').getElementsByTagName('span'); var aSpan = document.getElementsByTagName('span'); var oDirection = document.getElementById('direction'); var oCategory = document.getElementById('category'); var oType = document.getElementById('type'); var oRes = document.getElementById('Res'); dSpan[0].className = 'active'; cSpan[0].className = 'active'; tSpan[0].className = 'active'; for(var i=0; i<aSpan.length; i++){ aSpan[i].onclick = function(){ var siblings = this.parentNode.children; for(var j=0; j<siblings.length; j++){ siblings[j].className = ''; } this.className = 'active'; if(this.parentNode == oDirection || this.parentNode == oCategory || this.parentNode == oType){ returnRes(); } } } function returnRes(){ var o1 = 0, o2 = 0, o3 = 0; for(var i=0; i<dSpan.length; i++){ if(dSpan[i].className == 'active'){ o1 = i; } } for(var i=0; i<cSpan.length; i++){ if(cSpan[i].className == 'active'){ o2 = i; } } for(var i=0; i<tSpan.length; i++){ if(tSpan[i].className == 'active'){ o3 = i; } } oRes.innerHTML = (dSpan[o1].innerHTML + "," + cSpan[o2].innerHTML + "," + tSpan[o3].innerHTML); } </script>
最后附上效果图:
注:本篇博文是 【无条件】的分类筛选
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
下一篇:微信小程序wx.getUserInfo授权获取用户信息(头像、昵称)的实现