confirm in javascript

ask user yes or no

ex:

var answer = confirm("Do you want to confirm ?")
if (answer)
{

}

text field in javascript

get text field value by jquery:
ex:
$("#ip").val()

check UI status by javascript

jquery:
if( $("#checkBut").is(':checked') )
{

}

refresh page

javascript:
location.reload();

ajax by jquery

function testCallBack()

{

}

function test()
{
$.ajax({
url:'../servlet/test2',
data:"name=peter",
type:'post',
success:testCallBack

});


}