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How to implement a search box using Angular

亚连
亚连Original
2018-06-11 14:41:222803browse

This article mainly introduces Angular's implementation of search box and price upper and lower limit functions in detail. It has certain reference value. Interested friends can refer to it.

If you have nothing to do, write one Simple angular search box.

1. Requirements:

Use the AngularJS framework to implement the mobile product search function. Question requirements:
1) Search for materials by yourself and convert the mobile phone to the original data format. The product data is enriched to at least 10 or more
2) Design the page by yourself, which needs to include the "search condition part" and the "mobile phone information display part"
3) When changing any search conditions, the search results need to be displayed in real time in "
4 in "Display Part") Specific requirements for search conditions:
Search box (match operating system, product name, manufacturer for fuzzy query)
Price range (start price ~ end price)

2. Requirements analysis:

First, we need to render the product onto the page.

Secondly, when we enter the search box text, products that match the search box text are dynamically displayed.

Among them, dynamic means that every time we enter a character, the product will be filtered.

Finally, the same principle applies to the upper and lower limits of price.

So, in this way, it is most convenient for us to use angular. Because angular supports bidirectional data very well.

3. Actual code:

1) HTML code: 

<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <meta name="viewport" content="width=device-width,initial-scale=1">
  <title>AngularJS Page Useing Bootstrap Framework</title>
  <link rel="stylesheet" href="">
  <script src="./lib/angular/angular-v1.6.6.js"></script>
</head>
<body ng-app="searchApp">
  <p ng-controller="dataCtrl">
    <input type="text" name="搜索框" ng-model="content" placeholder="请输入要搜索的物品">
    <input type="text" name="价格上限" ng-model="top" placeholder="价格上限">
    <input type="text" name="价格下限" ng-model="bottom" placeholder="价格下限">
    <p>
      <ul>
        <li ng-repeat="p in datas">
          {{p.name}}
        </li>
      </ul>
    </p>
  </p>
</body>
</html>

2) JS code: 

let httpApp = angular.module( &#39;searchApp&#39;, [] );
  
  httpApp.controller( &#39;dataCtrl&#39;, [ "$scope", "$http", function( $scope, $http ){
    let http = $http.get( "conf.json" );
    //模拟从后端获取的json数据。
    $scope.content = &#39;&#39;;
    $scope.$watch("content + top + bottom",function(){
      http.then(
        // success callback
        function success( response ){
          $scope.datas = response.data;
          //进行价格筛选。
          $scope.datas=$scope.datas.filter(function( x,index ){
            if($scope.top===undefined&&$scope.bottom===undefined)
            {
              return 1;
            }
            else if($scope.top===undefined){
              return x.price>=$scope.bottom
            }
            else if($scope.bottom===undefined){
              return x.price<=$scope.top;
            }
            else{
              return x.price>=$scope.bottom&&x.price<=$scope.top;
            }
          });
          //进行搜索内容筛选。
          $scope.datas=$scope.datas.filter(function( x,index ){
            system=x.system.indexOf($scope.content)+1;
            name = x.name.indexOf($scope.content)+1;
            producer=x.producer.indexOf($scope.content)+1;
            if(system+name+producer>=1){
              return 1;
            }
            else{
              return 0;
            }
          })
        },
        // error callback
        function error( response ){
          console.log( response );
        }
      );
    });
  } ] );

PS: For I'm lazy, I didn't write a very nice style. You can add it yourself if you need.

3) conf.json code: 

[
  {
    "system": "ios",
    "name": "Apple iPhone 6s 16GB 玫瑰金色",
    "price": 4698,
    "producer": "Apple",
    "pic": "01.jpg"
  },
  {
    "system": "MIUI",
    "name": "小米手机4S 全网通版 2GB内存 16GB 白色",
    "price": 1499,
    "producer": "小米",
    "pic": "02.jpg"
  },
  {
    "system": "Android",
    "name": "魅蓝note3 （16GB） 银色 全网通公开版 双卡双待",
    "price": 1099,
    "producer": "魅族科技",
    "pic": "03.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6587,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6578,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6788,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6878,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6528,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6988,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6388,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6378,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6738,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6568,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6558,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6738,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6428,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 652488,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 654588,
    "producer": "Apple",
    "pic": "04.jpg"
  },
  {
    "system": "ios",
    "name": "Apple iPhone 6s Plus 64GB 银色 移动联通电信4G手机",
    "price": 6545645688,
    "producer": "Apple",
    "pic": "04.jpg"
  }
]

PS: The json data transmitted by the server is simulated through the object. In addition, pictures can be added and implemented by yourself.

4. Final question:

Of course, the code I uploaded left a hole. How to cancel the restriction of the corresponding price range after entering the price and clearing it.

Finally, you can think about how the search method can be optimized as an expansion.

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

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