dingjing

function doTask(i){
    // Create a new process.
    var defer = $.Deferred();
    
    // Start main task in the process
    setTimeout(function(){
        log("Step " + (i+1) + " finished.");
        
        // Terminate the processs upon successful finish.
        defer.resolve(i);

dingjing

function doTask1(add, multiply){
    setTimeout(function(){
        var rslt = Math.floor(Math.random() * 10);
        log("Task 1 returned " + rslt);
        if(rslt >= 5)
            add(rslt);
        else
            multiply(rslt);
    }, 500);
}

dingjing

function doTask1(){
    var rslt = Math.floor(Math.random() * 10);
    log("Task 1 returned " + rslt);
    return rslt;
}

function addTask(i){
    var rslt = Math.floor(Math.random() * 10);
    log("addTask finished with " + rslt);
    return i + rslt;

dingjing

function doTask(i){
    setTimeout(function(){
        if(i < 5){
            log("Step " + ++i + " finished.");
            doTask(i++);
        }else
            log("All steps done.");
    }, Math.random()*1000);
}

dingjing

function doTask(i, next){
    setTimeout(function(){
        log("Step " + ++i + " finished.");
        next();
    }, Math.random()*1000);
}

$(function(){
    doTask(0, function(){
        doTask(1, function(){

dingjing

function doTask(i){
    setTimeout(function(){
        log("Step " + ++i + " finished.");
    }, Math.random()*1000);
}

dingjing

<div id="log"></id>

<script type="text/javascript">
var log = function(content){
    $('<p/>').html(content).appendTo('#log');
}

function doTask(i){
    log("Step " + ++i + " finished.");
}

dingjing

$.ajax("http://somewhere.net")
    .success(function(){ alert("success"); })
    .error(function(){ alert("error"); });

dingjing

$.ajax({
    url: "http://somewhere.net",
    success: function(){ alert("success"); },
    error: function(){ alert("error"); }
});

dingjing

<script type="text/javascript">
function reorder(table, row) {
 if(!table)
   table = $("#QuizTable")[0];
 
  var rows = table.tBodies[0].rows;
  var step = 1;
  for (var i = 1; i < rows.length; i++) {
    $(".orderbox", rows[i]).val(step++);
  }