我正在尝试使用以下代码在 jQuery 中实现 Pub/Sub 模式:
$.each({
trigger : 'publish',
on : 'subscribe',
off : 'unsubscribe'
}, function ( key, val) {
jQuery[val] = function() {
o[key].apply( o, arguments );
};
});
在我尝试用多个实例构建一些东西之前,这很好用。
我有一个应用于每个$('.activity_radio')
div 元素的活动对象。当我单击任何$('.activity_radio')
div 内的单选按钮时,该$.subscribe
事件将根据页面上 div 的数量触发 (X) 次activity_radio
。
如何仅基于特定 div 发布/订阅事件?
代码
无线电活动 ( radio-activity.js )
var activity = {
init : function ( element ) {
// get our boilerplate code
this.activity = new util.factories.activity();
this.element = element;
this.$element = $(element);
// other init code
// gather our radio elements
this.target_element = this.$elem.find('input[type=radio]');
// send our radio elements to onSelect
this.activity.onSelect(this.target_element);
// trigger click function that will subscribe us to onSelect publish events
this.click()
},
// subscribe to events
click : function()
{
$.subscribe('activity.input.select', function ( event, data ){
// we have access to the value the user has clicked
console.log(data);
// trigger another function // do something else
});
}
}
基本活动样板代码 (activity-factory.js)
var activity_factory = factory.extend({
init: function(e)
{
// init code
},
onSelect : function ( inputs ) {
inputs.on('click', function(){
// do some processing
// retrieve the value
var data = $(this).val();
// announce that the event has occured;
$.publish( 'activity.input.select', data );
});
}
}
});
当 DOM 准备好时触发
$(function(){
// foreach DOM element with the class of activity_radio
$('.activity_radio').each(function(){
// trigger the init func in activity object
activity.init(this);
});
});