How to switch font size with jQuery_jquery

The example in this article describes how jQuery implements switching font size. Share it with everyone for your reference. The specific implementation method is as follows:

Copy code The code is as follows:

$.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: '/' });
}
});
};

I hope this article will be helpful to everyone’s jQuery programming.