jQuery Switch Case插件? [英] jQuery Switch Case Plugin?

问题描述

我知道switch case语句是javascript固有的，您无法更改.我仍在学习javascript和jQuery，所以我可以通过，但我不知道该写些与jQuery本身差不多的东西.因此，将其作为一个想法或关于这个想法是否可行的问题.

I know the switch case statement is inherent to javascript and you can't change it. I'm still learning javascript and jQuery so I can get by, but I don't know enough to write something that might be on the level of jQuery itself. So, take this as an idea or a question about if this idea is feasible.

这是我的主意，一个可以使用对象的开关案例语句...可以这样使用:

This is my idea, a switch case statement that can use objects... which can be used something like this:

switch( $(this) ){

 case .hasClass('foo'):
  // do something
  break;

 case .filter('.bar').attr('id') == 'foo':
  // do something else
  break;

}

---

甚至像这样的事情也会很好(可能是一个更合理的主意)...

---

Even something like this would be nice (possibly a more reasonable idea)...

switch ($(this).hasClass()) {

 case 'foo':
  alert('found a foo!');
  break;

 case 'bar':
  alert('found a bar!');
  break;

}

推荐答案

通常，开关并不是解决问题的最佳方法，但是使用jQuery，您可以制作一个类似于switch语句的插件:

Often switches are not the best way to solve a problem, but using jQuery you could make a plugin that works kind of like a switch statement:

(function($) {
    $.fn.switchClasses = function(switches) {
        return this.each(function() {
            var that = this;
            $.each(this.attr("class").split(' '), function(i, class) {
                var func = switches[class];
                if(func)
                    func.apply(that, class);
            });
        });
    };
})(jQuery);

您将像这样使用插件:

$(this).switchClasses(
    {
        "class1":
        function(class) {
            // Do something for this class, 
            // the "this" variable is the jquery object that matched the class
        },

        "class2":
        function(class) {

        }
    }
);

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