有没有办法在回调中保持引用？

var self_reference;
self_reference = this;

$(selector).bind(\'event\', function() {
  self_reference.someFunction();
});

this

$(selector).bind(\'event\', (function() {
  this.someFunction();
}).bind(this));

Function.prototype.bind

_.bind

$.proxy

$(selector).bind(\'event\', (_.bind(function() {
  this.someFunction();
}, this));

$(selector).bind(\'event\', ($.proxy(function() {
  this.someFunction();
}, this));

$.getJSON(url, $.proxy(function()
{
  // this has now got the desired context
}, this));