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HTML: When a browser scrolls to an input, how can one make it bring the entire input's parent into view?

Answer 1

+4 A:

<html>
  <head>
    <script>
      function scrollParentIntoView(elem){
        setTimeout(function(){
           var children  = elem.parentNode.children;
           var lastChild = children[children.length - 1];
           lastChild.scrollIntoView();
           elem.parentNode.scrollIntoView();
           //elem.ScrollIntoView();
         },1);
      }
    </script>
  </head>
  <body>
    ...
    <div>
      <input onfocus="scrollParentIntoView(this);" />
      ...
      <p>end</p>
    </div>
    ...
  </body>
</html>

I've tested on FF and Chrome and seems to do the job - you can see the input and 'end' when each '...' is replaced with a dozen
tags

tobyodavies 2010-10-12 23:33:48

yep, this works, but is not the "elegant" solution I'm looking for. Have an upvote. If noone provides a better solution or I don't find one, I'll accept yours :)

Prody 2010-10-13 00:01:00

Answer 2

A:

Of course, the obvious solution here is to put all the important content above the input element, but it's obvious that that won't do for whatever reason, so here's another solution:

Remember that tabindex can be used to allow any element to be focused. This means that we can simply drop a tabindex on the parent of the input elements to allow the entire parent to gain focus and scroll into view.

However, this also means that tab must be tapped twice to get the input element focused. You will also need to explicitly set tabindex on the input element to have them be the next in line to gain focus.

<ol id="input">
    <li tabindex="3">
        <input type="text" tabindex="5" />
        <p>Helper Text</p>
    </li>
    <li tabindex="7">
        <input type="text" tabindex="10" />
        <p>Helper Text</p>
    </li>
</ol>

You'll also want to give the parent elements a :focus style instead of the rather ugly dotted outline.

See: http://www.jsfiddle.net/F2fwy/2

Yi Jiang 2010-10-23 13:44:07

this a) doesn't work without causing other problems and b) is not elegant

Prody 2010-10-23 14:06:44

@Prody I've listed the caveats, and I don't think there are any other good solution for this problem.

Yi Jiang 2010-10-23 14:12:35

Answer 3

+2 A:

Here is a solution using jQuery. It's based on the height of your item container.

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"&gt;&lt;/script&gt;
<script type="text/javascript">
    $(document).ready(function() {
        $(".item input").focus(function() {
            var parent = $(this).parent();

            // Check if the bottom of the item container is below the viewport
            if ($(parent).position().top + $(parent).height() > $(window).scrollTop() + $(window).height())
            {
                // Adjust the scroll position according to the height of the item container
                $(window).scrollTop($(window).scrollTop() + $(parent).height());
            }
        });
    });
</script>

Edit

Here is a demo for you: http://pastehtml.com/view/1bnv1xb.html

Ed Saito 2010-10-26 19:12:30

you can use `var $parent = $(this).parent();` then `$parent.position().top` ...! good answer +1

aSeptik 2010-10-27 17:23:56

Answer 4

A:

This Javascript works in FF 3.6, IE 8, Safari 4, and Chrome 3.1. It doesn't require JQuery, doesn't need setTimeouts, and can be condensed to about 8 lines:

//Collect the elements 
var ALL = document.getElementsByTagName("INPUT");

for(x=0;x<ALL.length;x++) {
  //Add relative position style to allow offset math
  ALL.style.position = 'relative';

  ALL[x].onfocus = function() {
    //Find scroll offset distance
    var temp = this.offsetParent.offsetTop + 
               this.offsetParent.offsetHeight - 
               document.documentElement.clientHeight;

    //Detect webkit browser and apply scroll offset as appropriate
    window.devicePixelRatio ? 
      document.body.scrollTop = temp : 
      document.documentElement.scrollTop = temp;
  }
}

Steve 2010-10-28 02:43:20

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HTML: When a browser scrolls to an input, how can one make it bring the entire input's parent into view?

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