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jscript.js
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// JavaScript Document
// Global variables
var currentSelection;
var currentOffset;
var noHint = false;
var links = [''];
// Set your links here
links[0] = '<a href="index.html">Home</a>';
links[1] = '<a href="history.html">History</a>';
links[2] = '<a href="factors.html">Factors</a>';
links[3] = '<a href="sources.html">Sources</a>';
links[4] = '<a href="contact.html">Contact Us</a>';
// Builds the navigation menu
function setNav() {
'use strict';
var navLinks = '';
var i;
for ( i = 0; i < links.length; i++ ) {
if ( i < links.length-1 ) {
navLinks += links[i] + ' | ';
} else {
navLinks += links[i]
}
}
document.getElementById( 'navContainer' ).innerHTML = navLinks;
}
// Returns the top and left positions of an element.
function getOffset( el ) {
'use strict';
var _x = 0;
var _y = 0;
while( el && !isNaN( el.offsetLeft ) && !isNaN( el.offsetTop ) ) {
_x += el.offsetLeft - el.scrollLeft;
_y += el.offsetTop - el.scrollTop;
el = el.offsetParent;
}
return { top: _y, left: _x };
}
// Displays the hint to the right of the form elements.
function showHint( curElement, hintText, offset ) {
'use strict';
if ( noHint == false ) {
if ( ! offset ) {
offset = 0;
}
currentOffset = offset;
var hintElement = document.getElementById( 'hint' );
currentSelection = curElement;
hintElement.style.display = 'inline';
if ( curElement.id == "messageContainer" ) {
var elementLeft = getOffset( document.getElementById( curElement.id ) ).left + document.getElementById( curElement.id ).offsetWidth + 20;
} else {
var elementLeft = getOffset( document.getElementById( 'blockContainer' ) ).left + document.getElementById( 'blockContainer' ).offsetWidth + 15;
}
var elementTop = getOffset( document.getElementById( curElement.id ) ).top - offset;
hintElement.style.left = elementLeft + 'px';
hintElement.style.top = elementTop + 'px';
hintElement.innerHTML = '<img src="images/shortarrowleft.png" /> ' + hintText;
}
}
// Updates the position of the hint element.
function updateHintPosition() {
'use strict';
if ( noHint == false ) {
var hintElement = document.getElementById( 'hint' );
if ( currentSelection.id == "messageContainer" ) {
var elementLeft = getOffset( document.getElementById( currentSelection.id ) ).left + document.getElementById( currentSelection.id ).offsetWidth + 20;
} else {
var elementLeft = getOffset( document.getElementById( 'blockContainer' ) ).left + document.getElementById( 'blockContainer' ).offsetWidth + 15;
}
var elementTop = getOffset( document.getElementById( currentSelection.id ) ).top - currentOffset;
hintElement.style.left = elementLeft + 'px';
hintElement.style.top = elementTop + 'px';
}
}
// Valides each element in the form, and returns element-specific errors to the user if they don't pass (both graphically and through text).
function formValidation() {
'use strict';
var passInspection = true;
var errorContent = '';
var firstError = '';
var emailPatt = /^[-a-z0-9~!$%^&*_=+}{\'?]+(\.[-a-z0-9~!$%^&*_=+}{\'?]+)*@([a-z0-9_][-a-z0-9_]*(\.[-a-z0-9_]+)*\.(aero|arpa|biz|com|coop|edu|gov|info|int|mil|museum|name|net|org|pro|travel|mobi|[a-z][a-z])|([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}))(:[0-9]{1,5})?$/i;
//Checking each element...
if ( document.getElementById( 'contactFirstName' ).value == '' ) {
errorContent = errorContent + '• First name is missing.<br>';
document.getElementById( 'contactFirstName' ).style.border = '1px solid #b52a0a';
firstError = 'contactFirstName';
passInspection = false;
} else {
document.getElementById( 'contactFirstName' ).style.border = 'solid #2E3549 1px';
}
if ( document.getElementById( 'contactLastName' ).value == '' ) {
errorContent = errorContent + '• Last name is missing.<br>';
document.getElementById( 'contactLastName' ).style.border = '1px solid #b52a0a';
if (firstError == '') {
firstError = 'contactLastName';
}
passInspection = false;
} else {
document.getElementById( 'contactLastName' ).style.border = 'solid #2E3549 1px';
}
if ( document.getElementById( 'contactEmail' ).value == '' ) {
errorContent = errorContent + '• Email is missing.<br>';
document.getElementById( 'contactEmail' ).style.border = '1px solid #b52a0a';
if (firstError == '') {
firstError = 'contactEmail';
}
passInspection = false;
} else if ( emailPatt.test( document.getElementById( 'contactEmail' ).value) == false ) {
errorContent = errorContent + '• The email address is invalid.<br>';
document.getElementById( 'contactEmail' ).style.border = '1px solid #b52a0a';
if (firstError == '') {
firstError = 'contactEmail';
}
passInspection = false;
} else {
document.getElementById( 'contactEmail' ).style.border = 'solid #2E3549 1px';
}
if ( document.getElementById( 'contactPhone' ).value != '' && document.getElementById( 'contactPhone' ).value.replace(/[^0-9]/g, '').length != 10 ) {
errorContent = errorContent + '• Invalid phone number.<br>';
document.getElementById( 'contactPhone' ).style.border = '1px solid #b52a0a';
if (firstError == '') {
firstError = 'contactPhone';
}
passInspection = false;
} else {
document.getElementById( 'contactPhone' ).style.border = 'solid #2E3549 1px';
}
if ( document.getElementById( 'messageContent' ).value == '' ) {
errorContent = errorContent + '• Your message is missing.<br>';
document.getElementById( 'messageContent' ).style.border = '1px solid #b52a0a';
if (firstError == '') {
firstError = 'messageContent';
}
passInspection = false;
} else {
document.getElementById( 'messageContent' ).style.border = 'solid #2E3549 1px';
}
// If all the elements pass inspection....
if ( passInspection == true ) {
var thankYou = new Audio('files/thankyou.mp3');
thankYou.play();
var fullName = document.getElementById( 'contactLastName' ).value + ', ' + document.getElementById( 'contactFirstName' ).value;
var validEmail = document.getElementById( 'contactEmail' ).value;
var validPhone = document.getElementById( 'contactPhone' ).value.replace(/[^0-9]/g, '');
var message = document.getElementById( 'messageContent' ).value;
var resultsWindow = window.open( '', 'newwindow', 'toolbar=no, scrollbars=no, resizable=no, height=500, width=300, left=500, top=50' );
resultsWindow.document.body.innerHTML = '';
resultsWindow.document.write( '<html><title>Results!</title><style>body { } h1 { text-align: center; }</style><body><h1>Results:</h1>');
resultsWindow.document.write( '<h3>Name:</h3> ' + fullName);
resultsWindow.document.write( '<h3>Email:</h3> ' + validEmail);
if ( validPhone != '' ) {
resultsWindow.document.write( '<h3>Phone:</h3> ' + validPhone);
} else {
resultsWindow.document.write( '<h3>Phone:</h3> None.' );
}
resultsWindow.document.write( '<h3>Message:</h3> ' + message);
resultsWindow.document.write( '</body></html>' );
document.getElementById( 'errorsBlock' ).innerHTML = '';
document.getElementById( 'hint' ).style.display = 'none';
return false; // For testing purposes
//return true;
// If the validation fails...
} else {
document.getElementById( 'errorsBlock' ).innerHTML = '<div name="errorsTitle" id="errorsTitle"><b>Please fix the following:</b></div>' + errorContent;
if ( firstError != '' ) {
if ( document.getElementById( firstError ).value == '' ) {
document.getElementById( firstError ).focus();
} else {
document.getElementById( firstError ).select();
}
}
updateHintPosition();
return false;
}
}
// Resets all form elements to their default state.
function clearAll() {
'use strict';
document.getElementById( 'contactFirstName' ).value = '';
document.getElementById( 'contactLastName' ).value = '';
document.getElementById( 'contactEmail' ).value = '';
document.getElementById( 'contactPhone' ).value = '';
document.getElementById( 'messageContent' ).value = '';
}
// Auto-fills the elements with predetermined entries for *testing* purposes.
function autoFill() {
'use strict';
document.getElementById( 'contactFirstName' ).value = 'Ryan';
document.getElementById( 'contactLastName' ).value = 'Trip';
document.getElementById( 'contactEmail' ).value = '[email protected]';
document.getElementById( 'contactPhone' ).value = '(555) 555-5555';
document.getElementById( 'messageContent' ).value = "'Ello world...";
}
// Runs when the page loads.
window.onload = function ( event ) {
'use strict';
setNav();
document.getElementById( 'contactFirstName' ).focus();
}
// Updates the "hint" element's position when the webpage is resized.
window.onresize = function( event ) {
'use strict';
updateHintPosition();
};
// Updates the "hint" element's position when the webpage is scrolled.
window.onscroll = function( event ) {
'use strict';
updateHintPosition();
};