Difference between revisions of "Template:Team:CHINA CD UESTC/basicjs"

(Created page with "function gotoTop(acceleration,stime) { acceleration = acceleration || 0.1; stime = stime || 10; var x1 = 0; var y1 = 0; var x2 = 0; var y2 = 0; var x3 = 0...")
 
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function gotoTop(acceleration,stime) {
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$(function(){
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  acceleration = acceleration || 0.1;
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$(window).scroll(function() {
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  stime = stime || 10;
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if($(window).scrollTop() >= 100){ //????????????ֵʱ???????С??~
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  var x1 = 0;
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$('.actGotop').fadeIn(300); //?????????䣬ԽС????????
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  var y1 = 0;
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}else{    
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  var x2 = 0;
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$('.actGotop').fadeOut(300); //??????????䣬ԽС?ʧ?????
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  var y2 = 0;
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}  
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  var x3 = 0;
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});
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  var y3 = 0;
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$('.actGotop').click(function(){$('html,body').animate({scrollTop: '0px'}, 800);}); //??????ͣ????䣬ԽС?ʧ?????
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  if (document.documentElement) {
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});
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      x1 = document.documentElement.scrollLeft || 0;
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</script>
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      y1 = document.documentElement.scrollTop || 0;
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  }
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  if (document.body) {
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      x2 = document.body.scrollLeft || 0;
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      y2 = document.body.scrollTop || 0;
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  }
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   var x3 = window.scrollX || 0;
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  var y3 = window.scrollY || 0;
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  var x = Math.max(x1, Math.max(x2, x3));
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  var y = Math.max(y1, Math.max(y2, y3));
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  var speeding = 1 + acceleration;
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  window.scrollTo(Math.floor(x / speeding), Math.floor(y / speeding));
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  if(x > 0 || y > 0) {
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      var run = "gotoTop(" + acceleration + ", " + stime + ")";
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      window.setTimeout(run, stime);
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  }
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}
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Revision as of 14:00, 15 September 2015

$(function(){ $(window).scroll(function() { if($(window).scrollTop() >= 100){ //????????????ֵʱ???????С??~ $('.actGotop').fadeIn(300); //?????????䣬ԽС???????? }else{ $('.actGotop').fadeOut(300); //??????????䣬ԽС?ʧ????? } }); $('.actGotop').click(function(){$('html,body').animate({scrollTop: '0px'}, 800);}); //??????ͣ????䣬ԽС?ʧ????? }); </script>