I know a good amount of PHP, but know very little of Javascript.
Basically, what I want is:
If a user selects item x from an HTML form select box, then the descriptive text for item x will auto populate an HTML form input text box below it.
Does anyone have a working sample that I can use or edit to be able to do what I need?
Based on the example at http://w3schools.com/js/tryit.asp?filename=tryjs_putmore
<html>
<head>
<script type="text/javascript">
function moveNumbers()
{
var no=document.getElementById("no");
var option=no.options[no.selectedIndex].text;
document.getElementById("result").value=option;
}
</script>
</head>
<body>
<form>
Select numbers:<br />
<select id="no" onchange="moveNumbers()">
<option>0</option>
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
<option>6</option>
<option>7</option>
<option>8</option>
<option>9</option>
</select>
<input type="text" id="result" size="20">
</form>
</body>
See http://w3schools.com/htmldom/dom%5Fobj%5Fselect.asp and http://w3schools.com/htmldom/dom%5Fevents.asp for more info.
It would help if the input box has an id:
<input type="text" id="someinput" value="" />
Then you need an event listener on the select box.
<select id="someselect">...</select>
In javascript:
document.getElementById('someselect').onchanged = function() {
var selem = document.getElementById('someselect');
document.getElementById('someinput').value = selem.options[selem.selectedIndex].value;
}
This is a very rough idea.
Here is a working copy in plain JavaScript using no libraries:
<script type="text/javascript">
// Pre populated array of data
var myData = new Array();
myData[1] = 'Some text';
myData[2] = 'Some other text';
</script>
<form id="example" name="example">
<select id="selector" name="selector">
<option value="" selected></option>
<option value=1>One</option>
<option value=2>Two</option>
</select>
<br />
<input type="text" value="" id="populateme" name="populateme" />
</form>
<script type="text/javascript">
document.example.selector.onchange = updateText;
function updateText() {
var obj_sel = document.example.selector;
document.example.populateme.value = myData[obj_sel.value];
}
</script>