twik.js

// similar behavior as an HTTP redirect
window.location.replace("http://sidanmor.com");

// similar behavior as clicking on a link
window.location.href = "http://sidanmor.com";

//get value of a input item(of a id) using raw js
document.getElementById('inputID').value;

//get value of a input item(of a name) using raw js
document.getElementsByName('inputID')[0].value;

//===============
//get an element by class
function getElementsByAttributeValue(atrName,atrValue) {
    var matchElems = [];

    var allElems = document.getElementsByTagName('*');
    for(var x = 0, len = allElems.length; x < len; x++) {
        if(allElems[x].getAttribute(atrName) != atrValue) {
            continue;
        }

        matchElems.push(allElems[x]);
    }

    return matchElems;
}

var elems = getElementsByAttributeValue("class","someclass");
//===============



//===============
//ajax request

$.ajax({
  method: "<METHOD NAME>",
  url: "some.php",
  data: { name: "John", location: "Boston" }
})
  .done(function( msg ) {
    alert( "Data Saved: " + msg );
  });

//===============