Currently I am working on a piece of javascript to copy a link plus the option the user has selected within the select tag.
The variable I assign in the javascript remains undefined. Is there a way to make this code work? I do not wish to use the ID attribute with a loop unless this can be applied into my PHP script (in which I echo the select tags, because I'm showing database results, whenever a result is shown, it will also show a select tag). This link shows a simple example of what I made so far: http://jsfiddle.net/b31au78v/
Here is my code:
<table>
<tr>
<th>Name</th>
<th>Gender</th>
</tr>
<tr>
<td>Hank</td>
<td>
<select onChange="getValue()" class="ddlEval">
<option>Select an option...</option>
<option val="gender.php?=male">Male</option>
<option val="gender.php?=female">Female</option>
</select>
</td>
</tr>
<tr>
<td>Jeff</td>
<td>
<select onChange="getValue()" class="ddleval">
<option>Select an option...</option>
<option val="gender.php?=male">Male</option>
<option val="gender.php?=female">Female</option>
</select>
</td>
</tr>
</table>
<script>
function getValue() {
optVal = this.value;
if(optVal != "Select an option...")
{
window.prompt("This is the link that's going to be coppied: ", "localhost:8080/" + optVal);
}
}
</script>
I guess I need to replace "this" with something else, but it is only to show what I actually want to happen.
Consider the following approach:
var optVal = selectTag.options[selectTag.selectedIndex].value;
In your case ( jsFiddle ):
<script>
function getValue(s) {
optVal = s.options[s.selectedIndex].value;
if(optVal != "Select an option...")
{
window.prompt("This is: ", "localhost:8080/gender.php?=" + optVal);
}
}
</script>
While changing the onChange event code:
<select onChange="getValue(this)"...
Please notice that you should also pass the id/name of the member, so when someone changes the first member's gender it won't conflict with the second one.
There are two issues here:
There's no attribute val
it should be value
:
<option value="none">Select an option …</option>
<option value="gender.php?=male">Male</option>
Note : If you don't have an attribute value
the value of the element will be the text of the option
-element selected instead.
this
in your function has a different scope, so it's not aware of a property called this.value
. You can however pass the element into the function, like:
<select onchange="getValue(this);"></select>
Then you can get its value like:
function getValue(e) {
var optVal = e.value;
if ('none' != optVal) {
window.prompt("This is the link that's going to be coppied: ", "localhost:8080/" + optVal);
}
}
Demo
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