jQuery在设置插件选项之前添加变量

Question

What is the best way to add a variable to this structure before setting plugin options?

$('.example').somePlugin({
     option1: 1, 
     option2: 2
});

More details: Where can I add var selector = $(this) to use in the callback? I have to use the $('.example') selector in the callback.

$('.example').somePlugin({
    option1: 1, 
    option2: 2,
    callback: function () {
      // use variable selector
    }
 });

Answer 1

One option is to loop through items and initialise the plugin on each instance, as follows:

$('.example').each(function(){
    var $self = $(this);
    $self.somePlugin({
        option1: 1, 
        option2: 2,
        callback: function () {
          // I can use $self/$(this) for this callback now 

        }
    });
});

That way $(this) is a reference to a unique instance and is available to you for the callback