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DHTML and JavaScript - writing text to a <DIV> from a variable

Posted on 2004-04-01
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Last Modified: 2010-04-06
is it possible to write text to a div with JavaScript?  i want to change adjust a number in the text based on the user input.  
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Question by:dancing_penguin
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7 Comments
 
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Expert Comment

by:dorward
ID: 10730342
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Expert Comment

by:dorward
ID: 10730370
<div id='foo'>0
</div>
<button onclick="document.getElementById('foo').replaceChild(document.createTextNode(i++),document.getElementById('foo').firstChild)">Hello</button>
<script type="text/javascript">
var i = 1;
</script>
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dorward earned 500 total points
ID: 10730377
And this works from a user input

<div id='foo'>0</div>
<button onclick="document.getElementById('foo').replaceChild(document.createTextNode(document.getElementById('userinput').value),document.getElementById('foo').firstChild)">Hello</button>
<input type="text" id="userinput">
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Expert Comment

by:dorward
ID: 10730384
Or this.

<div id='foo'>0</div>
<input  onkeyup="document.getElementById('foo').replaceChild(document.createTextNode(this.value),document.getElementById('foo').firstChild)">
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by:YZlat
ID: 10731653
use innerHTML
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by:YZlat
ID: 10731687
<script language="javascript">
<!--
function writeText(text){
   if (document.all)
       document.all.mydiv.innerHTML = text;
}
//-->
</script>

<div id="mydiv">
test
</div>
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Expert Comment

by:dorward
ID: 10731715
innerHTML is non-standard, and document.all is positively harmful.

Use document.getElementId where possible (as it is the public standard). If you need support for Internet Explorer 4.0 (which is the only browser to support document.all but not document.getElementById) then you can do something like

if (document.getElementById) {
  obj = document.getElementById('foo');
} else if (document.all) {
  obj = document.all.foo;
}

However, given the market share of IE 4.0, it really isn't worth it.
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