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Thread: Setinterval to go to anchor smoothly

  1. #1
    Join Date
    Jul 2014
    Posts
    3

    Setinterval to go to anchor smoothly

    Hey guys,

    I have a script here that sets an interval and goes to an anchor. However, it switches instantly and not smoothly.
    How can I make this work?

    Code:
    <script>
    var myVar = setInterval(function(){myTimer()}, 1000);
    function myTimer() {
    window.location.hash="   The anchor   "; 
    clearInterval(myVar);
    }
    </script>
    I have found a script that works on a class and has a click event. This one slides smoothly to the anchor. I've tried to
    somehow combine them but so far no luck.

    Code:
    <script type='text/javascript'>
    jQuery(document).ready(function($) {
     
    	$(".scroll").click(function(event){		
    		event.preventDefault();
    		$('html,body').animate({scrollTop:$(this.hash).offset().top}, 500);
    	});
    });
    </script>
    Code:
    <a href="#nee" class="scroll">Link To Anchor</a>
    And last but not least; Can I build in an If, Else event. For instance, when the anchor is not found, nothing will happen?

    I appreciate your help!

  2. #2
    Join Date
    Mar 2007
    Location
    localhost
    Posts
    5,862
    What are you trying to do to the anchor?
    --> JavaScript Frameworks like JQuery, Angular, Node <--
    ... and please remember to wrap code with forum BBCode tags:-

    [CODE]...[/CODE] [HTML]...[/HTML] [PHP]...[/PHP]

    If you can't think outside the box, you will be trapped forever with no escape...

  3. #3
    Join Date
    Jul 2014
    Posts
    3
    Hey, thanks for your reply.

    What I want to happen is that when you open our website after 4 seconds it will smoothly slide down to an anchor below.

    http://jsfiddle.net/CsnD9/5/
    You can see with the scripts that i have posted, the page shoots automatically to the anchor after 1 second. The buttons there however, make the action slide.

  4. #4
    Join Date
    Jun 2004
    Location
    Portsmouth UK
    Posts
    2,709
    Code:
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
        <head>
    </head>
    <body>
    
    <p id="demo"></p>
    <a href="#nee" class="scroll">Link Text Here</a>
    
    <div id="jaja" style="width:200px; height:1000px; background-color:#0f0"></div>
    <div id="nee" style="width:200px; height:1000px; background-color:#456"></div>
    
    <a href="#demo" class="scroll">Scroll to top</a>
    <script type="text/javascript">
    /*<![CDATA[*/
    
    var zxcScrollTo={
    
     Scroll:function(t,ms){
      var o=document.getElementById(t),t=o?this.pos(o):t,s=window.innerHeight?window.pageYOffset:document.documentElement.clientHeight?document.documentElement.scrollTop:document.body.scrollTop;
      typeof(t)=='number'&&t>=0?this.animate(s,t,new Date(),typeof(ms)=='number'&&ms>=20?ms:1000):null;
     },
    
     pos:function(o){
      var r=0;
      while(o){
       r+=o.offsetTop;
       o=o.offsetParent;
      }
      return r;
     },
    
     animate:function(f,t,srt,mS){
      var oop=this,ms=new Date()-srt,n=(t-f)/mS*ms+f;
      clearTimeout(oop.to);
      if (isFinite(n)){
       window.scrollTo(0,n);
      }
      if (ms<mS){
       oop.to=setTimeout(function(){ oop.animate(f,t,srt,mS); },10);
      }
      else {
       window.scrollTo(0,t);
      }
     }
    
    
    }
    
    
    setTimeout(function(){ zxcScrollTo.Scroll('nee',2000); },2000);
    /*]]>*/
    </script>
    </body>
    </html>
    Vic

    God loves you and will never love you less.

    http://www.vicsjavascripts.org/Home.htm
    If my post has been useful please donate to http://www.operationsmile.org.uk/

  5. #5
    Join Date
    Jul 2014
    Posts
    3
    Hey Vic, thanks for the quick reply and the effort you put into writing this script.

    I have looked into the scroll to element too but what I don't like about it is that it moves static. A one speed motion.
    What I like about the animation the buttons let it have is that it has an ease.

    I didnt come across a scroll to script that let it have this ease. Is it possible?

  6. #6
    Join Date
    Jun 2004
    Location
    Portsmouth UK
    Posts
    2,709
    Code:
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
        <head>
    </head>
    <body>
    
    <p id="demo"></p>
    <a href="#nee" class="scroll">Link Text Here</a>
    
    <div id="jaja" style="width:200px; height:1000px; background-color:#0f0"></div>
    <div id="nee" style="width:200px; height:1000px; background-color:#456"></div>
    
    <a href="#demo" class="scroll">Scroll to top</a>
    <script type="text/javascript">
    /*<![CDATA[*/
    
    var zxcScrollTo={
    
     Scroll:function(t,ms){
      var ms=typeof(ms)=='number'&&ms>=20?ms:1000,o=document.getElementById(t),t=o?this.pos(o):t,s=window.innerHeight?window.pageYOffset:document.documentElement.clientHeight?document.documentElement.scrollTop:document.body.scrollTop;
      typeof(t)=='number'&&t>=0?this.animate(s,t,new Date(),ms,Math.PI/(2*ms)):null;
     },
    
     pos:function(o){
      var r=0;
      while(o){
       r+=o.offsetTop;
       o=o.offsetParent;
      }
      return r;
     },
    
    
     animate:function(f,t,srt,mS,i){
      var oop=this,ms=new Date()-srt,n=(t-f)*Math.sin(i*ms)+f;
      clearTimeout(oop.to);
      if (isFinite(n)){
       window.scrollTo(0,n);
      }
      if (ms<mS){
       oop.to=setTimeout(function(){ oop.animate(f,t,srt,mS,i); },10);
      }
      else {
       window.scrollTo(0,t);
      }
     }
    
    
    }
    
    
    setTimeout(function(){ zxcScrollTo.Scroll('nee',2000); },2000);
    /*]]>*/
    </script>
    </body>
    </html>
    Vic

    God loves you and will never love you less.

    http://www.vicsjavascripts.org/Home.htm
    If my post has been useful please donate to http://www.operationsmile.org.uk/

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HTML5 Development Center

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