application)\/xml/i,
jsonType = 'application/json',
htmlType = 'text/html',
blankRE = /^\s*$/
// trigger a custom event and return false if it was cancelled
function triggerAndReturn(context, eventName, data) {
var event = $.Event(eventName)
$(context).trigger(event, data)
return !event.defaultPrevented
}
// trigger an Ajax "global" event
//触发 ajax的全局事件
function triggerGlobal(settings, context, eventName, data) {
if (settings.global) return triggerAndReturn(context
关键词：zepto是啥