过滤与角JS字母列表 [英] Filter the list with letter in angular js

问题描述

我在表中显示一个列表，其中我需要过滤用的名字第一个字母的结果，上面的列表中我有一个字母A B C D等。
点击后面的字母列表将其名字是过滤器

I have a list displayed in table where I need to filter the result with first letter of name,above the list I have a letter A B C D and so on. After click the letter list will be filter by its first name

有关前：名单细节苹果男孩桥
后点击 A ，苹果将显示

For ex: list details are Apple Boy Bridge after click A, Apple will be displayed

推荐答案

水果代替，我不得不筛选国名，以显示自己的销售再presentatives：

Instead of fruit, I had to filter names of countries to display their sales representatives:

'use strict';

angular.module('sodemo')
.filter('firstLetter', function () {
    return function (input, letter) {
        input = input || [];
        var out = [];
        input.forEach(function (item) {
            //console.log("current item is", item, item.charAt(0));
            if (item.charAt(0).toLowerCase() == letter) {
                out.push(item);
            }
        });
        return out;
    }
});

一个快速生成与英文字母的数组：

A quick way to generate an array with letters of the alphabet:

$scope.alphabet = "abcdefghijklmnopqrstuvwxyz".split("");

和看法，这也设置一个不同的背景颜色，如果这封信是活动：

and the view, which also sets a different background colour if the letter is active:

<button type="button" class="btn-alphabet btn btn-default" ng-repeat="letter in alphabet" ng-click="setActiveLetter(letter)" ng-class="{'btn-primary': letter==activeLetter}">{{letter}}</button>

我过滤国家的数组像这样的内容：

I filtered elements of the array of countries like this:

<ul class="list-group countries-salesreps" >
    <li class="list-group-item" ng-repeat="country in filteredCountriesArray = (countriesArray | firstLetter:activeLetter)" ng-click="showSalesRep(country)" ng-class="{'btn-primary': country==currentCountry}">{{country}}</li>
 </ul>

您可以检查是否存在使用。长度在过滤列表元素：

You can check if there are elements in the filtered list using .length:

<div class="alert alert-warning" ng-hide="filteredCountriesArray.length">No available countries starting with <em>{{activeLetter}}</em></div>

这篇关于过滤与角JS字母列表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！