jquery插件扩展默认值问题
这是我的第一篇文章,所以我希望我发布到正确的地方。
我正在尝试开发一个对话框/模式插件。这是我的第一个插件,我不确定我是否以正确的方式制作了它。我遇到的问题是 $.extend 没有更新设置对象。我使用该插件有 2 个元素。 #dialog 元素没有扩展插件设置对象。我已经尝试了几天来了解插件是如何工作的,它从内部杀死了我:)
$("#icon_menu").Dialog();
$("#dialog").Dialog({closeable:false,clear_on_close : true});
如果您能给我任何帮助,我将不胜感激,
这里是代码
(function( $ ){
$.fn.Dialog = function( method ) {
var elem = this;
var settings = {
'mask' : '#mask',
'closeable' : true,
'clear_on_close' : false
};
var methods = {
init : function( options ) {
if ( options ) {
$.extend( settings, options );
}
console.log(settings);
},
open : function( options ) {
var window_width = $(window).width();
var window_height = $(window).height();
var modal_height = "";
var modal_width = "";
var top = "";
var left = "";
if(!settings.set_width)
{
modal_width = elem.outerWidth();
}else{
modal_width = settings.set_width;
}
if(!settings.set_height)
{
modal_height = elem.outerHeight();
}else{
modal_height = settings.set_height;
}
if(!settings.set_y_pos)
{
top = (window_height-modal_height)/2;
}else{
top = settings.set_y_pos;
}
if(!settings.set_x_pos)
{
left = (window_width-modal_width)/2;
}else{
left = settings.set_x_pos;
}
elem.addClass('active').css({'top': top + 'px', 'left': left + 'px'});
$(settings.mask).css({ 'display' : 'block', opacity : 0}).fadeTo(500,0.8);
elem.css({ 'display' : 'block', opacity : 0}).fadeTo(500,1);
if(settings.closeable){$(settings.mask).bind('click.Dialog', methods.close );}
$(window).bind('scroll.Dialog', methods.reposition);
},
open_ajax : function(options)
{
$.get(options.page, function(data){
elem.html(data);
methods.open();
});//$.get("sign_in.html",
},
close : function( options ) {
$(settings.mask).fadeOut(500);
elem.fadeOut(500);
//alert(settings.clear_on_close)
console.log(settings.clear_on_close)
if(settings.clear_on_close)
{
elem.html("");
}
$(window).unbind('scroll.Dialog');
$(settings.mask).unbind('click.Dialog');
},
reposition : function( options )
{
$(settings.mask).css({"marginTop": ($(window).scrollTop()) + "px"});
elem.stop().animate({"marginTop": ($(window).scrollTop()) + "px"},1000);
}
};
if ( methods[method] ) {
return methods[ method ].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( typeof method === 'object' || ! method ) {
return methods.init.apply( this, arguments );
} else {
$.error( 'Method ' + method + ' does not exist on jQuery.tooltip' );
}
};
})( jQuery );
this is my first post so I hope I am posting to the right place.
I am trying to develop a dialog/modal plugin. this is my first plugin and I'm not sure if I have produced it in the correct way. The problem I am having is that the $.extend is not updating the settings object. I've got 2 elements using the plugin. the #dialog element is not extending the plugins settings object. I've been trying for a couple of days to learn how plugins work and its killing me from the inside :)
$("#icon_menu").Dialog();
$("#dialog").Dialog({closeable:false,clear_on_close : true});
Any help you can give me would be greatly appreciated
here is the code
(function( $ ){
$.fn.Dialog = function( method ) {
var elem = this;
var settings = {
'mask' : '#mask',
'closeable' : true,
'clear_on_close' : false
};
var methods = {
init : function( options ) {
if ( options ) {
$.extend( settings, options );
}
console.log(settings);
},
open : function( options ) {
var window_width = $(window).width();
var window_height = $(window).height();
var modal_height = "";
var modal_width = "";
var top = "";
var left = "";
if(!settings.set_width)
{
modal_width = elem.outerWidth();
}else{
modal_width = settings.set_width;
}
if(!settings.set_height)
{
modal_height = elem.outerHeight();
}else{
modal_height = settings.set_height;
}
if(!settings.set_y_pos)
{
top = (window_height-modal_height)/2;
}else{
top = settings.set_y_pos;
}
if(!settings.set_x_pos)
{
left = (window_width-modal_width)/2;
}else{
left = settings.set_x_pos;
}
elem.addClass('active').css({'top': top + 'px', 'left': left + 'px'});
$(settings.mask).css({ 'display' : 'block', opacity : 0}).fadeTo(500,0.8);
elem.css({ 'display' : 'block', opacity : 0}).fadeTo(500,1);
if(settings.closeable){$(settings.mask).bind('click.Dialog', methods.close );}
$(window).bind('scroll.Dialog', methods.reposition);
},
open_ajax : function(options)
{
$.get(options.page, function(data){
elem.html(data);
methods.open();
});//$.get("sign_in.html",
},
close : function( options ) {
$(settings.mask).fadeOut(500);
elem.fadeOut(500);
//alert(settings.clear_on_close)
console.log(settings.clear_on_close)
if(settings.clear_on_close)
{
elem.html("");
}
$(window).unbind('scroll.Dialog');
$(settings.mask).unbind('click.Dialog');
},
reposition : function( options )
{
$(settings.mask).css({"marginTop": ($(window).scrollTop()) + "px"});
elem.stop().animate({"marginTop": ($(window).scrollTop()) + "px"},1000);
}
};
if ( methods[method] ) {
return methods[ method ].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( typeof method === 'object' || ! method ) {
return methods.init.apply( this, arguments );
} else {
$.error( 'Method ' + method + ' does not exist on jQuery.tooltip' );
}
};
})( jQuery );
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问题是你的插件有一个内部状态。每次在对象上调用对话框方法时,都会创建一个新状态——旧状态永远不会被引用或保存。
阅读本教程中的数据部分,了解有关如何跨函数调用存储状态的更多想法:http:// /docs.jquery.com/Plugins/Authoring#Data
The problem is that your plugin has an internal state. Everytime you call the dialog method on an object, a new state created -- the old state is never referenced or saved.
Read the data section in this tutorial for more ideas on how to store the state across function calls: http://docs.jquery.com/Plugins/Authoring#Data
这是我通常使用的模式。请注意,我在插件代码中定义默认值后直接应用它们。我的模式也不是 100% 正确。但它确实有效。
This is the pattern I generally use. Note that I apply the defaults directly after they are defined in my plugin code. I'm not 100% my pattern is correct either. But it does work.
这是创建 jquery 插件的绝佳资源:
http://jqueryboilerplate.com/
This is a fantastic resource for creating a jquery plugins:
http://jqueryboilerplate.com/