How to implement fuzzy query function in drop-down box in Angular-JS Tutorial-php.cn

Home

Web Front-end

JS Tutorial

How to implement fuzzy query function in drop-down box in Angular

亚连

Jun 13, 2018 pm 06:00 PM

angulardrop down boxfuzzy query

This article mainly introduces Angular's implementation of the fuzzy query function of the drop-down box, involving AngularJS event response and string query and other related operation skills. Friends in need can refer to the following

The example of this article describes the implementation of the drop-down box in Angular Fuzzy query function. Share it with everyone for your reference, the details are as follows:

I studied angularjs two days ago, and I have to say that the mvc idea of angularjs is still very powerful. It is still very advantageous for projects that focus on data processing.

I wrote a demo of a search drop-down box, and all the comments were written in it, so it won’t be so wordy anymore.

1. Ordinary way to realize

<!DOCTYPE html>
<html>
<head lang="zh_CN">
<meta charset="utf-8">
<title>www.jb51.net Angular模糊匹配</title>
<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js" type="text/javascript"></script>
<link href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="stylesheet">
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script src="http://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
</head>
<body >
<p ng-app="myApp" ng-controller="myCtrl">
 <input type = &#39;test&#39; ng-change="changeKeyValue(searchField)" ng-model="searchField" style = &#39;display:block;width:200px&#39; ng-click = &#39;hidden=!hidden&#39; value="{{searchField}}"/></input>
 <p ng-hide="hidden">
  <select style = &#39;width:200px&#39; ng-change="change(x)" ng-model="x" multiple>
   <option ng-repeat="data in datas" >{{data}}</option>
  </select>
 </p>
</p>
<p>
<p><h1 id="angular输入选择框">angular输入选择框</h1></p>
<p><h2 id="逻辑实现步骤">逻辑实现步骤</h2></p>
<p>1文本框做输入，并监控器change事件，在change事件中获取输入值，获取的输入值与选择框中的各个下拉项进行比较</p>
<p>2如果包含则只显示包含的部分，不包含则显示全部</p>
<p>
<script>
var app = angular.module(&#39;myApp&#39;, []);
app.controller(&#39;myCtrl&#39;, function($scope) {
 $scope.datas = ["key4","xyz","key3","xxxx","key2","value2","key1","value1"]; //下拉框选项
 $scope.tempdatas = $scope.datas; //下拉框选项副本
 $scope.hidden=true;//选择框是否隐藏
 $scope.searchField=&#39;&#39;;//文本框数据
 //将下拉选的数据值赋值给文本框
 $scope.change=function(x){
  $scope.searchField=x;
  $scope.hidden=true;
 }
 //获取的数据值与下拉选逐个比较，如果包含则放在临时变量副本，并用临时变量副本替换下拉选原先的数值，如果数据为空或找不到，就用初始下拉选项副本替换
 $scope.changeKeyValue=function(v){
  var newDate=[]; //临时下拉选副本
  //如果包含就添加
  angular.forEach($scope.datas ,function(data,index,array){
   if(data.indexOf(v)>=0){
    newDate.unshift(data);
   }
  });
  //用下拉选副本替换原来的数据
  $scope.datas=newDate;
  //下拉选展示
  $scope.hidden=false;
  //如果不包含或者输入的是空字符串则用初始变量副本做替换
  if($scope.datas.length==0 || &#39;&#39;==v){
   $scope.datas=$scope.tempdatas;
  }
  console.log($scope.datas);
 }
});
</script>
</html>

2. Command way to realize

<!DOCTYPE html>
<html>
<head lang="zh_CN">
<meta charset="utf-8">
<title>www.jb51.net Angular模糊匹配</title>
<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js" type="text/javascript"></script>
<link href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="stylesheet">
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script src="http://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
</head>
<body >
<p ng-app="myApp" ng-controller="myCtrl">
 <p>
  <select-search datas="datas"></select-search>
 </p>
</p>
<p>
<p><h1 id="angular输入选择框-nbsp-自定义指令方式">angular输入选择框 自定义指令方式</h1></p>
<p><h2 id="逻辑实现步骤">逻辑实现步骤</h2></p>
<p>1文本框做输入，并监控器change事件，在change事件中获取输入值，获取的输入值与选择框中的各个下拉项进行比较</p>
<p>2如果包含则只显示包含的部分，不包含则显示全部</p>
<p>
<script>
var app = angular.module(&#39;myApp&#39;, []);
app.controller(&#39;myCtrl&#39;, function($scope) {
  $scope.datas = ["key4","xyz","key3","xxxx","key2","value2","key1","value1"]; //下拉框选项
});
app.directive(&#39;selectSearch&#39;, function($compile) {
 return {
 restrict: &#39;AE&#39;, //attribute or element
 scope: {
  datas: &#39;=&#39;,
  //bindAttr: &#39;=&#39;
 },
 template:
 &#39;<input type = "test" ng-change="changeKeyValue(searchField)" ng-model="searchField" style = "display:block;width:200px" &#39;+
 &#39;ng-click = "hidden=!hidden" value="{{searchField}}"/></input>&#39;+
 &#39;<p ng-hide="hidden">&#39;+
 &#39; <select style = "width:200px" ng-change="change(x)" ng-model="x" multiple>&#39;+
 &#39;  <option ng-repeat="data in datas" >{{data}}</option>&#39;+
 &#39; </select>&#39;+
 &#39;</p>&#39;,
 // replace: true,
 link: function($scope, elem, attr, ctrl) {
  $scope.tempdatas = $scope.datas; //下拉框选项副本
  $scope.hidden=true;//选择框是否隐藏
  $scope.searchField=&#39;&#39;;//文本框数据
 //将下拉选的数据值赋值给文本框
  $scope.change=function(x){
   $scope.searchField=x;
   $scope.hidden=true;
  }
 //获取的数据值与下拉选逐个比较，如果包含则放在临时变量副本，并用临时变量副本替换下拉选原先的数值，如果数据为空或找不到，就用初始下拉选项副本替换
  $scope.changeKeyValue=function(v){
   var newDate=[]; //临时下拉选副本
  //如果包含就添加
   angular.forEach($scope.datas ,function(data,index,array){
    if(data.indexOf(v)>=0){
     newDate.unshift(data);
    }
   });
  //用下拉选副本替换原来的数据
   $scope.datas=newDate;
  //下拉选展示
   $scope.hidden=false;
  //如果不包含或者输入的是空字符串则用初始变量副本做替换
   if($scope.datas.length==0 || &#39;&#39;==v){
    $scope.datas=$scope.tempdatas;
   }
   console.log($scope.datas);
  }
 }
 };
});
</script>
</html>

The final effect is as follows:

Note that the multiple attribute is set for the select tag, so the input tag can overwrite the select tag on the page

If You don’t need the multiple attribute. You need to use p to simulate the select tag effect.

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

How to implement mouse-responsive Taobao animation effect in jQuery

How to use jQuery to implement mouse-responsive transparency gradient Animation effect

How to determine NaN

in JavaScript

The above is the detailed content of How to implement fuzzy query function in drop-down box in Angular. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Python and JavaScript: Understanding the Strengths of EachMay 06, 2025 am 12:15 AM

Python and JavaScript each have their own advantages, and the choice depends on project needs and personal preferences. 1. Python is easy to learn, with concise syntax, suitable for data science and back-end development, but has a slow execution speed. 2. JavaScript is everywhere in front-end development and has strong asynchronous programming capabilities. Node.js makes it suitable for full-stack development, but the syntax may be complex and error-prone.

JavaScript's Core: Is It Built on C or C ?May 05, 2025 am 12:07 AM

JavaScriptisnotbuiltonCorC ;it'saninterpretedlanguagethatrunsonenginesoftenwritteninC .1)JavaScriptwasdesignedasalightweight,interpretedlanguageforwebbrowsers.2)EnginesevolvedfromsimpleinterpreterstoJITcompilers,typicallyinC ,improvingperformance.

JavaScript Applications: From Front-End to Back-EndMay 04, 2025 am 12:12 AM

JavaScript can be used for front-end and back-end development. The front-end enhances the user experience through DOM operations, and the back-end handles server tasks through Node.js. 1. Front-end example: Change the content of the web page text. 2. Backend example: Create a Node.js server.

Python vs. JavaScript: Which Language Should You Learn?May 03, 2025 am 12:10 AM

Choosing Python or JavaScript should be based on career development, learning curve and ecosystem: 1) Career development: Python is suitable for data science and back-end development, while JavaScript is suitable for front-end and full-stack development. 2) Learning curve: Python syntax is concise and suitable for beginners; JavaScript syntax is flexible. 3) Ecosystem: Python has rich scientific computing libraries, and JavaScript has a powerful front-end framework.

JavaScript Frameworks: Powering Modern Web DevelopmentMay 02, 2025 am 12:04 AM

The power of the JavaScript framework lies in simplifying development, improving user experience and application performance. When choosing a framework, consider: 1. Project size and complexity, 2. Team experience, 3. Ecosystem and community support.

The Relationship Between JavaScript, C , and BrowsersMay 01, 2025 am 12:06 AM

Introduction I know you may find it strange, what exactly does JavaScript, C and browser have to do? They seem to be unrelated, but in fact, they play a very important role in modern web development. Today we will discuss the close connection between these three. Through this article, you will learn how JavaScript runs in the browser, the role of C in the browser engine, and how they work together to drive rendering and interaction of web pages. We all know the relationship between JavaScript and browser. JavaScript is the core language of front-end development. It runs directly in the browser, making web pages vivid and interesting. Have you ever wondered why JavaScr

Node.js Streams with TypeScriptApr 30, 2025 am 08:22 AM

Node.js excels at efficient I/O, largely thanks to streams. Streams process data incrementally, avoiding memory overload—ideal for large files, network tasks, and real-time applications. Combining streams with TypeScript's type safety creates a powe

Python vs. JavaScript: Performance and Efficiency ConsiderationsApr 30, 2025 am 12:08 AM

The differences in performance and efficiency between Python and JavaScript are mainly reflected in: 1) As an interpreted language, Python runs slowly but has high development efficiency and is suitable for rapid prototype development; 2) JavaScript is limited to single thread in the browser, but multi-threading and asynchronous I/O can be used to improve performance in Node.js, and both have advantages in actual projects.

See all articles

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

How to fix KB5055523 fails to install in Windows 11?

3 weeks agoByDDD

How to fix KB5055518 fails to install in Windows 10?

3 weeks agoByDDD

Roblox: Dead Rails - How To Tame Wolves

1 months agoByDDD

Strength Levels for Every Enemy & Monster in R.E.P.O.

1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Roblox: Grow A Garden - Complete Mutation Guide

2 weeks agoByDDD

Hot Tools

Zend Studio 13.0.1

Powerful PHP integrated development environment

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.