Template:XJTU-China/home.js

$(document).ready(function(){

 // header scroll to top animation
 $(window).scroll(function() {
   if ($(this).scrollTop() == 0) {
     $('header li a, header .nav-head, header').animate({lineHeight: '84px'}, 400, 'linear');
     $('header .nav-pic').animate({marginBottom: '15px'}, 400, 'linear');
     $('header').animate({opacity: '0.7'}, 400, 'linear');
     $('header').data('expend', 'true');
     console.log('scoll to the top');
   } else if ($(this).scrollTop() >= 100 && $('header').data('expend') != 'false') {
     $('header li a, header .nav-head, header').animate({lineHeight: '54px'}, 200, 'linear');
     $('header .nav-pic').animate({marginBottom: '0'}, 200, 'linear');
     $('header').animate({opacity: '1'}, 200, 'linear');
     $('header').data('expend', 'false');
   }
 });

 // banner text showing animation
 $('#text-d').fadeIn(800);
 $('#text-e').delay(800).fadeIn(800);
 $('#text-cose').delay(1600).fadeIn(1000);
 $('.banner-sub-text').delay(3000).fadeIn(1000);
 $('.banner-up-arrow').delay(4000).fadeIn(800);

 // banner scroll hint animation
 setInterval(function(){
   $('.banner-up-arrow').fadeTo(1400, 0.4).fadeTo(1400, 0.8);
 }, 2800);
 var iter=1;

 // banner picture cycling animation
 setInterval(function(){
   if (iter == $('.banner-pic-wrapper').children().length-1) {
     var next_iter = 1;
   } else {
     var next_iter = iter+1;
   }
   $('#banner-pic-'+next_iter).fadeIn(1000);
   $('#banner-pic-'+iter).delay(500).fadeOut(1000);
   iter = next_iter;
 }, 6000)

 // content text showing animation
 var title_show = function(element) {
   if ($(element).data('inview') == 'true') {
     $(element).animate({top: '-40px', opacity: '0'}, 300, 'swing');
     $(element).data('inview', 'false'); 
   } else {
     $(element).animate({top: '0', opacity: '1'}, 600, 'swing');
     $(element).data('inview', 'true');
   }
 };
 var text_show = function(element) {
   if ($(element).data('inview') == 'true') {
     $(element).animate({left: '-100px', opacity: '0'}, 400, 'swing');
     $(element).data('inview', 'false'); 
   } else {
     $(element).animate({left: '0', opacity: '1'}, 1000, 'swing');
     $(element).data('inview', 'true');
   }
 };
 var text_show_r = function(element) {
   if ($(element).data('inview') == 'true') {
     $(element).animate({left: '100px', opacity: '0'}, 400, 'swing');
     $(element).data('inview', 'false'); 
   } else {
     $(element).animate({left: '0', opacity: '1'}, 1000, 'swing');
     $(element).data('inview', 'true');
   }
 };
 $('.content-title').waypoint(function(){
   title_show(this.element);
 }, {offset: 'bottom-in-view'});
 $('.content-text:not(#content-block-2 .content-text)').waypoint(function(){
   text_show(this.element);
 }, {offset: 'bottom-in-view'});
 $('#content-block-2 .content-text').waypoint(function(){
   text_show_r(this.element);
 }, {offset: 'bottom-in-view'});

});