原生JS实现多条件筛选

2024-01-27 15:44:10

https://www.jb51.net/article/193662.htm

原生JS实现多条件筛选

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

12345678910111213141516171819202122232425262728 <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>

1234567 <style> span{display: inline-block; cursor: pointer; padding: 8px; border: 1px solid #999;} span.active{ background-color: #c14d00; }</style>

123456789101112131415161718192021222324252627282930313233343536373839404142434445 <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脚本之家。

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