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HTML5’s new tag datalist enables automatic entry into the database fuzzy query when entering the first letter of Chinese/Pinyin, and returns the corresponding results to generate a datalist. When the input content in the input box changes, the datalist will automatically trigger the drop-down. Frame, the solution is very good. Let me share the example code with you through this article. Friends who need it can refer to it
The recent project involves a small function. When customers choose suppliers, due to the large number of suppliers, There are many (about 3,000), so it is obviously unrealistic to directly generate drop-down boxes, so I changed the solution and planned to use the new tag datalist in HTML5 to automatically enter the database fuzzy query when entering the first letter of Chinese/Pinyin and return the corresponding As a result, a datalist is generated. Since the datalist will automatically trigger the drop-down box when the input content in the input box changes, it is more convenient to use than select. The front-end code is as follows:
Html Code:
<!DOCTYPE html> <html lang="en"> <head id="head"> <title>库存下拉框测试</title> <meta charset="utf-8"> <meta content="IE=edge,chrome=1" http-equiv="X-UA-Compatible"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="description" content=""> <meta name="author" content=""> <script src="../../Common/content/jquery-1.7.2.min.js"type="text/javascript"></script> <script src="../../Common/pages/include.js" class="include" type="text/javascript"></script> <script src="../../Common/js/AjaxJson.js" type="text/javascript"></script> <script src="../../Common/js/Setting.js" type="text/javascript"></script> <script src="../../Common/js/Paging.js" type="text/javascript"></script> <script src="../../Js/warehouseManage/testyy.js" type="text/javascript"></script> </head> <body class=""> <!--<![endif]--> <p class="navbar"></p> <p class="sidebar-nav"></p> <p class="content"> <p class="header"><h1 id="ADU" class="page-title">下拉框测试</h1></p> <p class="container-fluid"> <p class="row-fluid"> <!-- --------------------------多条件查询--------------------------------------------- --> <p class="well" id="searchDemo"> <p>测试数据(默认均为d00001):<br> 昆山市大陆配件有限公司 ksdlpjyxgs <br> 亿真企业有限公司 yzqyyxgs <br> 泰州市安誊轴皮厂(集团厂) tzsatzpc(jtc) </p> </p> 按 供应商名动态匹配(中文或者拼音均可): <input list="bro" id="name" oninput="this.value=this.value.replace(/^ +| +$/g,'');search('name','bro','name')" > <datalist id="bro"></datalist> </p> </p> </p> </body> <!-- -----------------------footer-------------------------- --> <footer class="foot"></footer> </html>
JavaScript Code:
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var listobj=null; //datalist对象 var requestItem=null; //后台返回的json数据中所需的key值 var inputContent=null; //input标签对象 /**search()说明: * inputID: input标签的ID * datalistID: datalist标签的ID * itemName: 后台返回的json数据中所需的key值(仅需表格中中文字段的属性名) * */ function search(inputID,datalistID,itemName) { inputContent=document.getElementById(inputID); var datalist=document.getElementById(datalistID); //防止在无输入内容的情况下产生遗留下拉选项 if(inputContent.value.length==0||inputContent.value==" ") { var sub=datalist.childNodes; if(sub.length>0) { for (var i =sub.length-1; i>=0 ; i--) { datalist.removeChild(sub[i]); } } listobj=null; requestItem=null; inputContent.value=null; return false; } //全局变量赋值 listobj=datalist; requestItem=itemName; var data=""; var url=""; if(/^[a-zA-Z]*$/.test(inputContent.value)) { //检测出是拼音首字母 data="type=searchWords¶m="+inputContent.value; //注意:data-----------需要自定义 url=baseurl + "/servlet/ListDemo"; //注意:url-----------需要自定义 sendRequest("post",url,data,getResult); } else if (/^[\u4e00-\u9fa5]*$/.test(inputContent.value)) { //检测出是中文 data="type=searchChinese¶m="+inputContent.value; //注意:data-----------需要自定义 url=baseurl + "/servlet/ListDemo"; //注意:url-----------需要自定义 sendRequest("post",url,data,getResult); } } //填写仓库下拉框 function getResult(result) { var data=result; var JData=eval("(" + data + ")"); var maxlength=10; //注释:maxlength保证过多查询结果下只显示10条 if(JData.length<=10) { maxlength=JData.length; } var sub=listobj.childNodes; for (var i =sub.length-1; i>=0 ; i--) { listobj.removeChild(sub[i]); //清空datalist所有的下拉选项 } if(JData.length==0) //没有查询结果 { alert("没有符合条件的结果,请重输"); inputContent.value=""; //清空input输入框的值 return false; } for (var i=0;i<maxlength;i++) { var obj=document.createElement("option"); var indexobj=JData[i]; if(/^[a-zA-Z]*$/.test(inputContent.value)) { obj.value=indexobj[requestItem]; obj.innerHTML=inputContent.value; } if (/^[\u4e00-\u9fa5]*$/.test(inputContent.value)) { obj.value=indexobj[requestItem]; } listobj.appendChild(obj); } var suffix=document.createElement("option"); suffix.value=" "; suffix.innerHTML="输入更多有关"+inputContent.value+"的信息"; listobj.appendChild(suffix); return false; }
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