how to get the value of all the input on submit in jquery code example

Example 1: jquery get all input name and values and submit

$("form").submit(function(){ return validateForm($(this)) });
function validateForm(form){
var retVal = true;
var re;
$.each(form.serializeArray(), function(i, field) {
  var input = $('input[name='+field.name+']');
  field.value = $.trim(field.value);
  switch(field.name){
    case "name" :
        and another cases...
      }
    })
 }

Example 2: jquery get value of input submit

$("#submit_button").click(function() {
    var data = $("#my_form").serialize();
    data += data.length ? "&" : ""; // check if empty
    data += escape($(this).attr("name"))+"="+escape($(this).val());
    // ...
    return false;
});