一 准备工作

1.引用文件

下面链接中有一个jquery.js文件，请在index.html中引用。

2.新建文件

新建一个js文件，编写指令。这也是我第一次写指令，指令可扩展性强，还很方便，当项目中重复使用的一些效果时可以通过指令来减少冗余的代码。

二 代码编写

/**
 * Created by xiehan on 2017/12/8.
 * 柱状图动态加载指令
 */
angular.module('studyApp.directives')
 .directive('progressPer', function ($compile,$timeout) {
 return {
 restrict: 'AE',
 scope: {
 progressData: '='
 },
 template: ' <div class="progress-main" ng-repeat="item in progressData">'+
 '<div class="progress-data">'+
 '<span>{{item.name}}</span>'+
 '<div class="skillbar clearfix " data-percent={{item.width}}>'+
 '<div class="skillbar-bar"></div>'+
 '<div class="skill-bar-percent">{{item.sum}}</div>'+
 '</div>'+
 '</div>'+
 '<p class="progress-rate">{{item.percent}}</p>'+
 '</div>',
 replace: true,
 transclude: true,
 link: function (scope, element, attrs) {
 $compile(element.contents())(scope.$new());
 $timeout(function() {
 jQuery('.skillbar').each(function(){
 jQuery(this).find('.skillbar-bar').animate({
 width:jQuery(this).attr('data-percent')
 },1000);
 });
 });
 }
 }
 });

/**
 * Created by xiehan on 2017/11/29.
 * controller文件
 */
angular.module('studyApp.controllers')
 .controller('ProgressCtrl', function ($scope, $rootScope, $ionicHistory,$timeout,$location) {
 $scope.title = '进度条效果';
 $scope.goBack = function () {
 $ionicHistory.goBack();
 };
 var dataInfo=[
 {
 NAME:"测试1",
 NUM:30,
 RATE:30
 },
 {
 NAME:"测试2",
 NUM:25,
 RATE:25
 },
 {
 NAME:"测试3",
 NUM:45,
 RATE:45
 }
 ];

 handleTabData(dataInfo);
 function handleTabData(data){
 var widthData=[];
 for(var i = 0;i<data.length;i++){
 widthData.push({
 width:data[i].RATE+'%', //进度条百分比
 name:data[i].NAME, //标题
 sum:data[i].NUM, //数量
 percent:data[i].RATE+'%'}); //百分比
 }
 $scope.handleDataInfo = widthData;
 //不使用指令加上下面的代码
 // $timeout(function() {
 // jQuery('.skillbar').each(function(){
 // jQuery(this).find('.skillbar-bar').animate({
 // width:jQuery(this).attr('data-percent')
 // },1000);
 // });
 // });
 }
 });

<ion-item>不使用指令</ion-item>
 <div class="progress-main" ng-repeat="item in handleDataInfo">
 <div class="progress-data">
 <span>{{item.name}}</span>
 <div class="skillbar clearfix " data-percent={{item.width}}>
 <div class="skillbar-bar"></div>
 <div class="skill-bar-percent">{{item.sum}}</div>
 </div>
 </div>
 <p class="progress-rate">{{item.percent}}</p>
 </div>
 <ion-item>使用指令</ion-item>
 <progress-per progress-data="handleDataInfo"></progress-per>

/***************进度条样式css********/
.skillbar {
 position: relative;
 display: block;
 margin-bottom: 15px;
 width: 100%;
 background: #eee; /**背景颜色**/
 height: 35px;
 border-radius: 3px;
 -moz-border-radius: 3px;
 -webkit-border-radius: 3px;
 -webkit-transition: 0.4s linear;
 -moz-transition: 0.4s linear;
 -ms-transition: 0.4s linear;
 -o-transition: 0.4s linear;
 transition: 0.4s linear;
 -webkit-transition-property: width, background-color;
 -moz-transition-property: width, background-color;
 -ms-transition-property: width, background-color;
 -o-transition-property: width, background-color;
 transition-property: width, background-color;
}

.skillbar-bar {
 height: 35px;
 width: 0px;
 background: #50d2c2;
 border-radius: 3px;
 -moz-border-radius: 3px;
 -webkit-border-radius: 3px;
}

.skill-bar-percent {
 position: absolute;
 right: 10px;
 top: 0;
 font-size: 11px;
 height: 35px;
 line-height: 35px;
 color: #ffffff;
 color: rgba(0, 0, 0, 0.4);
}

.progress-main{
 display: flex;
 display: -webkit-flex;
 align-items: center;
 -webkit-align-items: center;
 justify-content: center;
 -webkit-justify-content: center;
 margin-top: 10px;
}

.progress-data{
 margin-left: 5%;
 width: 100%;
 float: left;
}

.progress-rate{
 float: right;
 width: 20%;
 line-height: 35px;
 margin-left: 5%;
 margin-top: 10px;
}

三 效果图