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。

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