Web Front-endHTML TutorialDetailed explanation of Html5 datalist tag and dynamic matching with background dataDetailed explanation of Html5 datalist tag and dynamic matching with background data
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="下拉框测试">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(/^ +| +$/g,'');search('name','bro','name')" >
<datalist id="bro"></datalist>
</p>
</p>
</p>
</body>
<!-- -----------------------footer-------------------------- -->
<footer class="foot"></footer>
</html>JavaScript Code:
var listobj=null; //datalist对象
var requestItem=null; //后台返回的json数据中所需的key值
var inputContent=null; //input标签对象
/**search（）说明：
* inputID： input标签的ID
* datalistID： datalist标签的ID
* itemName： 后台返回的json数据中所需的key值（仅需表格中中文字段的属性名）
* */
function search(inputID,datalistID,itemName)
{
inputContent=document.getElementById(inputID);
var datalist=document.getElementById(datalistID);
//防止在无输入内容的情况下产生遗留下拉选项
if(inputContent.value.length==0||inputContent.value==" ")
{
var sub=datalist.childNodes;
if(sub.length>0)
{
for (var i =sub.length-1; i>=0 ; i--)
{
datalist.removeChild(sub[i]);
}
}
listobj=null;
requestItem=null;
inputContent.value=null;
return false;
}
//全局变量赋值
listobj=datalist;
requestItem=itemName;
var data="";
var url="";
if(/^[a-zA-Z]*$/.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;
}[Related recommendations]
2. Share a super comprehensive summary of HTML and CSS knowledge points
3. Teach you how to parse html under nodejs
4. htmlDetailed explanation of the example of implementing the quantity subscript on the message button
5. How to display JSON data in html introduce
The above is the detailed content of Detailed explanation of Html5 datalist tag and dynamic matching with background data. For more information, please follow other related articles on the PHP Chinese website!
How do you create a list in HTML?May 06, 2025 am 12:01 AMTocreatealistinHTML,useforunorderedlistsandfororderedlists:1)Forunorderedlists,wrapitemsinanduseforeachitem,renderingasabulletedlist.2)Fororderedlists,useandfornumberedlists,customizablewiththetypeattributefordifferentnumberingstyles.
HTML in Action: Examples of Website StructureMay 05, 2025 am 12:03 AMHTML is used to build websites with clear structure. 1) Use tags such as, and define the website structure. 2) Examples show the structure of blogs and e-commerce websites. 3) Avoid common mistakes such as incorrect label nesting. 4) Optimize performance by reducing HTTP requests and using semantic tags.
How do you insert an image into an HTML page?May 04, 2025 am 12:02 AMToinsertanimageintoanHTMLpage,usethetagwithsrcandaltattributes.1)UsealttextforaccessibilityandSEO.2)Implementsrcsetforresponsiveimages.3)Applylazyloadingwithloading="lazy"tooptimizeperformance.4)OptimizeimagesusingtoolslikeImageOptimtoreduc
HTML's Purpose: Enabling Web Browsers to Display ContentMay 03, 2025 am 12:03 AMThe core purpose of HTML is to enable the browser to understand and display web content. 1. HTML defines the web page structure and content through tags, such as, to, etc. 2. HTML5 enhances multimedia support and introduces and tags. 3.HTML provides form elements to support user interaction. 4. Optimizing HTML code can improve web page performance, such as reducing HTTP requests and compressing HTML.
Why are HTML tags important for web development?May 02, 2025 am 12:03 AMHTMLtagsareessentialforwebdevelopmentastheystructureandenhancewebpages.1)Theydefinelayout,semantics,andinteractivity.2)SemantictagsimproveaccessibilityandSEO.3)Properuseoftagscanoptimizeperformanceandensurecross-browsercompatibility.
Explain the importance of using consistent coding style for HTML tags and attributes.May 01, 2025 am 12:01 AMA consistent HTML encoding style is important because it improves the readability, maintainability and efficiency of the code. 1) Use lowercase tags and attributes, 2) Keep consistent indentation, 3) Select and stick to single or double quotes, 4) Avoid mixing different styles in projects, 5) Use automation tools such as Prettier or ESLint to ensure consistency in styles.
How to implement multi-project carousel in Bootstrap 4?Apr 30, 2025 pm 03:24 PMSolution to implement multi-project carousel in Bootstrap4 Implementing multi-project carousel in Bootstrap4 is not an easy task. Although Bootstrap...
How does deepseek official website achieve the effect of penetrating mouse scroll event?Apr 30, 2025 pm 03:21 PMHow to achieve the effect of mouse scrolling event penetration? When we browse the web, we often encounter some special interaction designs. For example, on deepseek official website, �...
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Dreamweaver Mac version
Visual web development tools
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
Dreamweaver CS6
Visual web development tools
SublimeText3 Linux new version
SublimeText3 Linux latest version
Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
