解决jQuery的toggle，的自动触发问题
在1.9以后的版本toggle()就存在这个问题，用之前的版本就正常了
解决办法：
1.去 jquery官网下载一个版本升级文件。http://blog.jquery.com/2013/05/08/jquery-migrate-1-2-1-released/
2.把原来的那块代码拿出来，写成一个插件
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>test</title>
<script type="text/javascript" src="http://cdn.staticfile.org/jquery/1.11.1/jquery.js"></script>
</head>
<body>
<button>test click me</button>
<script>
$(document).ready(function(){
$("button").toggle(function(){
$("body").css("background-color", "green");
}, function(){
$("body").css("background-color", "red");
}, function(){
$("body").css("background-color", "yellow");
});
});
$.fn.toggle = function( fn ) {
// Save reference to arguments for access in closure
var args = arguments,
guid = fn.guid || jQuery.guid++,
i = 0,
toggler = function( event ) {
// Figure out which function to execute
var lastToggle = ( jQuery._data( this, "lastToggle" + fn.guid ) || 0 ) % i;
jQuery._data( this, "lastToggle" + fn.guid, lastToggle + 1 );
// Make sure that clicks stop
event.preventDefault();
// and execute the function
return args[ lastToggle ].apply( this, arguments ) || false;
};
// link all the functions, so any of them can unbind this click handler
toggler.guid = guid;
while ( i < args.length ) {
args[ i++ ].guid = guid;
}
return this.click( toggler );
}
</script>
</body>
</html>