AngularJS实现星星等级评分功能

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 

angular.module('xxx').directive('stars', stars);

  function stars() {
    var directive = {
      restrict: 'ae',
      template: '<ul class="rating" ng-mouseleave="leave()">' +
        '<li ng-repeat="star in stars" ng-class="star" ng-click="click($index + 1)" ng-mouseover="over($index + 1)">' +
        '<i class="glyphicon glyphicon-star stars"></i>' +
        '</li>' +
        '</ul>',
      scope: {
        ratingvalue: '=',
        hovervalue: '=',
        max: '=',
        onhover: '=',
        onleave: '='
      },
      controller: startscontroller,

      link: function(scope, elem, attrs) {
        elem.css("display", "block");
        elem.css("text-align", "center");
        var updatestars = function() {
          scope.stars = [];
          for (var i = 0; i < scope.max; i++) {
            scope.stars.push({
              filled: i < scope.ratingvalue
            });
          }
        };
        updatestars();

        var updatestarshover = function() {
          scope.stars = [];
          for (var i = 0; i < scope.max; i++) {
            scope.stars.push({
              filled: i < scope.hovervalue
            });
          }
        };
        updatestarshover();

        scope.$watch('ratingvalue', function(oldval, newval) {
          if (newval) {
            updatestars();
          }
        });
        scope.$watch('hovervalue', function(oldval, newval) {
          if (newval) {
            updatestarshover();
          }
        });
      }


    };

    return directive;

    /** @nginject */
    function startscontroller($scope) {
      // var vm = this;
      $scope.click = function(val) {
        $scope.ratingvalue = val;
      };
      $scope.over = function(val) {
        $scope.hovervalue = val;
      };
      $scope.leave = function() {
        $scope.onleave();
      }

    }
  }

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。 

directive：
  scope: {
    readonly: '@'
  }
   function startscontroller($scope) {
      // var vm = this;
      $scope.click = function(val) {
       if ($scope.readonly) {
         return;
        }
        $scope.ratingvalue = val;
      };
      $scope.over = function(val) {
       if ($scope.readonly) {
         return;
        }
        $scope.hovervalue = val;
      };

   }

controller:
  $scope.readonly = false;

html:
  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。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。