angularJs实现星星等级评分
星期六加班,教育后台也要有星级评分等级的需求,醉了……基本知道些怎么做,网上也随便找了找,没什么合意的,毕竟需求不同,也不能完全一样不是。学习之,改之╮(╯▽╰)╭
Directive
1 angular.module('XXX').directive('stars', stars); 2 3 function stars() { 4 var directive = { 5 restrict: 'AE', 6 template: '<ul class="rating" ng-mouseleave="leave()">' + 7 '<li ng-repeat="star in stars" ng-class="star" ng-click="click($index + 1)" ng-mouseover="over($index + 1)">' + 8 '<i class="glyphicon glyphicon-star stars"></i>' + 9 '</li>' + 10 '</ul>', 11 scope: { 12 ratingValue: '=', 13 hoverValue: '=', 14 max: '=', 15 onHover: '=', 16 onLeave: '=' 17 }, 18 controller: startsController, 19 20 link: function(scope, elem, attrs) { 21 elem.css("display", "block"); 22 elem.css("text-align", "center"); 23 var updateStars = function() { 24 scope.stars = []; 25 for (var i = 0; i < scope.max; i++) { 26 scope.stars.push({ 27 filled: i < scope.ratingValue 28 }); 29 } 30 }; 31 updateStars(); 32 33 var updateStarsHover = function() { 34 scope.stars = []; 35 for (var i = 0; i < scope.max; i++) { 36 scope.stars.push({ 37 filled: i < scope.hoverValue 38 }); 39 } 40 }; 41 updateStarsHover(); 42 43 scope.$watch('ratingValue', function(oldVal, newVal) { 44 if (newVal) { 45 updateStars(); 46 } 47 }); 48 scope.$watch('hoverValue', function(oldVal, newVal) { 49 if (newVal) { 50 updateStarsHover(); 51 } 52 }); 53 } 54 55 56 }; 57 58 return directive; 59 60 /** @ngInject */ 61 function startsController($scope) { 62 // var vm = this; 63 $scope.click = function(val) { 64 $scope.ratingValue = val; 65 }; 66 $scope.over = function(val) { 67 $scope.hoverValue = val; 68 }; 69 $scope.leave = function() { 70 $scope.onLeave(); 71 } 72 73 } 74 }
CSS
.rating { color: #a9a9a9; margin: 0; padding: 0; text-align: center; } ul.rating { display: inline-block; } .rating li { list-style-type: none; display: inline-block; padding: 1px; text-align: center; font-weight: bold; cursor: pointer; } .rating .filled { color: #f00; } .rating .stars{ font-size: 20px; margin-right: 5px; }
Controller
//星星等级评分 $scope.max = 6; $scope.ratingVal = 6; $scope.hoverVal = 6;//我这需求是默认六个星全满(淡腾,反正也招不出神龙.因为还差一个.)一般的话,ratingVal和hoverVal都写0就可以了。 $scope.onHover = function(val) { $scope.hoverVal = val; }; $scope.onLeave = function() { $scope.hoverVal = $scope.ratingVal; } $scope.onChange = function(val) { $scope.ratingVal = val; }
HTML
<stars rating-value="ratingVal" hover-value="hoverVal" max="max" on-hover="onHover" on-leave="onLeave"></stars> ratingVal:{{ratingVal}};<br/> hoverVal:{{hoverVal}}
说几句,
星星那东西,可以直接输入法敲出来,也可以用unicode搞出来,字体文件什么的都行,你要硬用图片的话……把ngClass换成ngSrc也可以试试,代码改改也行,精灵图改改background-position也凑合过,╮(╯▽╰)╭ 想了一下,比较累,祝你成功。
如果是那种商城网站只是要看评价等级的话,复用代码也可以,加个readonly属性。
1 directive: 2 scope: { 3 readonly: '@' 4 } 5 function startsController($scope) { 6 // var vm = this; 7 $scope.click = function(val) { 8 if ($scope.readonly) { 9 return; 10 } 11 $scope.ratingValue = val; 12 }; 13 $scope.over = function(val) { 14 if ($scope.readonly) { 15 return; 16 } 17 $scope.hoverValue = val; 18 }; 19 20 } 21 22 controller: 23 $scope.readonly = false; 24 25 html: 26 readonly={{readonly}}.
写到这,突然意识到今后一定会改需求,加功能(已然习惯)。我还是默默地加上readonly吧……
指令这玩意,深了很绕,我也弄不熟,每次写还得翻翻以前写的代码,毕竟渣渣。每次不要复用的代码,我都懒得用指令,毕竟菜鸟。
还是多学习!