复制代码 代码如下:

$.fn.switchSize = function(settings) {
// defaults settings
settings = $.extend({
    container: \'body\',
    arrSizeClass: [\'small\', \'medium\', \'large\'],
    defaultClass: \'medium\',
    saveCookie: true
}, settings);
var $container = $(settings.container);
return this
    .each(function() {
        if ($.cookie(\'switchSize\')) {
        $container.addClass($.cookie(\'switchSize\'));
        $(this).data(\"current\", $.cookie(\'switchSize\'))
        }
    })
    .bind(\"click\", function() {
        var pos;
        if ($(this).data(\"current\")) {
        pos = jQuery.inArray($(this).data(\"current\"), settings.arrSizeClass);
        } else {
        pos = jQuery.inArray(settings.defaultClass, settings.arrSizeClass);
        }
        if (pos >= 0) { //Found Class
        if (pos == settings.arrSizeClass.length - 1) { //Check if last
            $(this).data(\"current\", settings.arrSizeClass[0]);
        } else {
            $(this).data(\"current\", settings.arrSizeClass[pos + 1]);
        }
        } else {
        //To prevent error
        $(this).data(\"current\", settings.arrSizeClass[0]);
        }
 
        $container.removeClass(settings.arrSizeClass[pos]).addClass($(this).data(\"current\"));
 
        if (settings.saveCookie === true) {
        $.cookie(\'switchSize\', $(this).data(\"current\"), { expires: 365, path: \'/\' });
        }
    });
};