本文实例讲述了jQuery实现切换字体大小的方法。分享给大家供大家参考。具体实现方法如下:
- $.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: '/' });
- }
- });
- };