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  • 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!

      

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  • 原文地址:https://www.cnblogs.com/rion1234567/p/5903269.html
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