Javascript jQuery插件与方法&;全局回调
我想创建一个既有方法又有回调的jQuery插件,方法可以工作,但回调无法工作,回调的范围让我困惑Javascript jQuery插件与方法&;全局回调,javascript,jquery,json,jquery-plugins,callback,Javascript,Jquery,Json,Jquery Plugins,Callback,我想创建一个既有方法又有回调的jQuery插件,方法可以工作,但回调无法工作,回调的范围让我困惑 (function($) { var methods = { create: function(options) { var defaults = { width: 320, height: 240, background: '#000',
(function($)
{
var methods = {
create: function(options) {
var defaults = {
width: 320,
height: 240,
background: '#000',
onstop: function(){}
};
var options = $.extend(defaults, options);
return $(this).each(function(i) {
console.log('create');
});
},
stop: function(options) {
var defaults = {
onstop: function(){}
};
var options = $.extend(defaults, options);
return $(this).each(function(i) {
console.log('stop');
options.onstop.call();
});
}
};
$.fn.myplugin = function(option) {
if (methods[option]) {
return methods[option].apply( this, Array.prototype.slice.call(arguments, 1));
} else if (typeof option === 'object' || ! option) {
return methods.create.apply(this, arguments);
} else {
$.error('Method ' + option + ' does not exist in jQuery.plugin');
}
};
})(jQuery);
所以在
中:
基本上,我想让onstop:function(){}成为插件的全局函数
/*=======更新的代码(请参阅注释)===========*/
(function($)
{
var callbacks = {
onready: $.Callbacks("once memory unique").add(function() {
//console.log('onready');
}),
ondeny: $.Callbacks("unique").add(function() {
//console.log('ondeny');
}),
onerror: $.Callbacks("unique").add(function() {
//console.log('onerror');
}),
onstop: $.Callbacks("unique").add(function() {
//console.log('onstop');
})
};
var methods = {
construct: function(){
},
create: function(options) {
var defaults = {
width: 320,
height: 240,
background: '#000',
onready: function(){},
onstop: function(){}
};
var options = $.extend(defaults, options);
return this.each(function(i, elements) {
for (var prop in options) {
if (prop in callbacks) {
callbacks[prop].add(options.prop);
}
}
callbacks.onready.fire();
});
},
stop: function() {
return this.each(function(i, elements) {
callbacks.onstop.fire();
});
}
};
$.fn.myplugin = function(option) {
if (methods[option]) {
return methods[option].apply( this, Array.prototype.slice.call(arguments, 1));
} else if (typeof option === 'object' || ! option) {
return methods.construct.apply(this, arguments);
} else {
$.error('Method ' + option + ' does not exist in jQuery.plugin');
}
};
})(jQuery);
我建议使用一些成熟的对象: 现在,当你得到一些新的选择时,你可以这样做
for (var prop in options)
if (prop in callbacks)
callbacks[prop].add(options[prop]);
要调用它们,请执行以下操作
callbacks.onstop.fire(/*args*/);
或者,如果您关心回调的上下文,请使用。我使用globalOptions变量将插件初始化选项存储为全局 这里有两个文件可以测试并用作模板 jquery.plugin.js (函数($){ index.html
<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<title>Example</title>
<script src="jquery.min.js"></script>
<script src="jquery.plugin.js"></script>
<script>
$(document).ready(function() {
var myElement = $('.container').myPlugin({
color: '#555',
backgroundColor: '#ddd',
oncreate: function(){
console.log('Callback: create');
},
onchangecolor: function(){
console.log('Callback: onchangecolor');
},
onloadpage: function(page){
console.log('Callback: onloadpage = '+page);
}
});
$('.color').click(function(event){
myElement.myPlugin('changeColor');
});
$('.page').click(function(event){
myElement.myPlugin('loadPage', { page: '#test' });
});
});
</script>
</head>
<body>
<div class="container">
<button class="color">changeColor</button> <button class="page">loadPage</button>
</div>
</body>
</html>
例子
$(文档).ready(函数(){
var myElement=$('.container').myPlugin({
颜色:'#555',
背景颜色:“#ddd”,
oncreate:function(){
log('Callback:create');
},
onchangecolor:function(){
log('Callback:onchangecolor');
},
onloadpage:函数(第页){
log('Callback:onload页面='+页面);
}
});
$('.color')。单击(函数(事件){
myElement.myPlugin('changeColor');
});
$('.page')。单击(函数(事件){
myElement.myPlugin('loadPage',{page:'#test'});
});
});
更改颜色加载页
如果有人有更好的方法和添加“private”方法,请分享。:)回调应该由插件的用户设置,不是吗?我想让它们作为选项保持可访问性起初这似乎可行,但我忘了我有另一个控制台。log(),我很好奇“once memory unique”和“unique”是什么我添加了回调,比如onready:$.callbacks(“onready”).add(function(){console.log('onready');}),我还将它们作为选项添加到了“create”方法中,但它们目前似乎没有启动。仍然在处理它……好吧,我发现了“unique”的问题诸如此类。将代码更新为我现在拥有的代码,但回调仍然不会启动。
$('#start')。单击(function(){$('#myvideo').myplugin('create',{onready:function(){console.log('on ready!');},onstop:function(){console.log('on stop!');})
这不会注销,修复了循环中向回调添加函数的一个小问题。顺便说一句,我不确定是否要将应用插件的每个元素的回调分开,因为您不能使用静态回调
对象。在中添加回调也是毫无用处的。每个-loop,因为它们只会在没有unique
标志的情况下再次添加。
callbacks.onstop.fire(/*args*/);
var pluginName = 'myPlugin';
var globalOptions = '';
var methods = {
create: function(options) {
var defaults = {
backgroundColor: '#000',
color: '#fff',
oncreate: function(){},
onchangecolor: function(){},
onloadpage: function(page){}
};
globalOptions = $.extend(defaults, options);
return $(this).each(function(i, elements) {
$(elements).data('globalOptions', globalOptions);
globalOptions.oncreate();
});
},
changeColor: function(){
return $(this).each(function(i, elements) {
globalOptions = $(elements).data('globalOptions');
if (!globalOptions) { $.error('Error: ' + pluginName + ' has not been initialized yet'); return false; }
$(this).css('background-color', globalOptions.backgroundColor);
$(this).css('color', globalOptions.color);
globalOptions.onchangecolor();
});
},
loadPage: function(options){
return $(this).each(function(i, elements) {
globalOptions = $(elements).data('globalOptions');
if (!globalOptions) { $.error('Error: ' + pluginName + ' has not been initialized yet'); return false; }
globalOptions.onloadpage(options.page);
location.href = options.page;
});
}
};
$.fn.myPlugin = function(option) {
if (methods[option]) {
return methods[option].apply(this, Array.prototype.slice.call(arguments, 1));
} else if (typeof option === 'object' || ! option) {
return methods.create.apply(this, arguments);
} else {
$.error('Error: Method "' + option + '" does not exist in ' + pluginName);
return false;
}
};
})(jQuery);
<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<title>Example</title>
<script src="jquery.min.js"></script>
<script src="jquery.plugin.js"></script>
<script>
$(document).ready(function() {
var myElement = $('.container').myPlugin({
color: '#555',
backgroundColor: '#ddd',
oncreate: function(){
console.log('Callback: create');
},
onchangecolor: function(){
console.log('Callback: onchangecolor');
},
onloadpage: function(page){
console.log('Callback: onloadpage = '+page);
}
});
$('.color').click(function(event){
myElement.myPlugin('changeColor');
});
$('.page').click(function(event){
myElement.myPlugin('loadPage', { page: '#test' });
});
});
</script>
</head>
<body>
<div class="container">
<button class="color">changeColor</button> <button class="page">loadPage</button>
</div>
</body>
</html>