1、bind(type,data,fn)
parameters:type(String):An event type
data(object):(optional) Addtional data passed to the event handler as event.data
fn(Function):A function to bind to the event on each of the set of matched elements

jQuery Code
$("p").bind("click",function()){
    alert($(this).text());
});
Before
<p>Hello</p>
Result:
alert("Hello")

思考结果：bind方法应该是很实用的一个方法，目前思考的应用可以做关键字的过滤，当输入的内容有非法字符时进行提示
 pass some additional data to the event handler

function handler(event){
    alert(event.data.foo);
}
$("p").bind("click",{foo:"bar"},handler)
Result:
alert("bar")