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返回值:jQuery
toggle([speed],[easing],[fn])
概述
用于绑定两个或多个事件处理器函数，以响应被选元素的轮流的 click 事件。
如果元素是可见的，切换为隐藏的；如果元素是隐藏的，切换为可见的。
1.9版本 .toggle(function, function, … ) 方法删除,jQuery Migrate（迁移）插件可以恢复此功能。
参数
fn,fn2,[fn3,fn4,...]Function,....V1.0 Removed 1.9
fn:第一数次点击时要执行的函数。
fn2:第二数次点击时要执行的函数。
fn3,fn4,...:更多次点击时要执行的函数。
[speed] [,fn]String,FunctionV1.0
speed: 隐藏/显示 效果的速度。默认是 "0"毫秒。可能的值：slow，normal，fast。"
fn:在动画完成时执行的函数，每个元素执行一次。
[speed], [easing ], [fn ] String,String,FunctionV1.4.3
speed: 隐藏/显示 效果的速度。默认是 "0"毫秒。可能的值：slow，normal，fast。"
easing:(Optional) 用来指定切换效果，默认是"swing"，可用参数"linear"
fn:在动画完成时执行的函数，每个元素执行一次。
switch BooleanV1.3
用于确定显示/隐藏的开关。如：true - 显示元素，false - 隐藏元素
示例
无参数描述:
对表格切换显示/隐藏
jQuery 代码:
$('td).toggle();fn,fn2描述: Removed 1.9
对表格的切换一个类
jQuery 代码:
$("td").toggle(
function () {
$(this).addClass("selected");
},
function () {
$(this).removeClass("selected");
}
);speed 描述:
用600毫秒的时间将段落缓慢的切换显示状态
jQuery 代码:
$("p").toggle("slow");speed,fn 描述:
用200毫秒将段落迅速切换显示状态，之后弹出一个对话框。
jQuery 代码:
$("p").toggle("fast",function(){
alert("Animation Done.");
});switch参数描述:
如果这个参数为true ，那么匹配的元素将显示;如果false ，元素是隐藏的
jQuery 代码:
$('#foo').toggle(showOrHide);
//相当于
if (showOrHide) {
$('#foo').show();
} else {
$('#foo').hide();
}