onclick event in HTML <select> not working Chrome and Safari
Solution 1
Call the function according to the select's value:
<select onchange="window['display_'+this.value]();">
If the value is "usgs_hour"
the concatenation would be 'display_' + 'usgs_hour' === 'display_usgs_hour'
and that function is called.
jsfiddle demo: http://jsfiddle.net/Ag3kh/
Solution 2
use switch construction for selected value
$('#usgsfeed').change(function () {
swith($(this).val()) {
case 'usgs_hour':
display_usgs_hour();
break;.....
}
})
Solution 3
you should indeed use onchange!
To do this in javascript (not jquery) this would work:
JavaScript:
<script type='text/javascript'>
function SelectChanged() {
if (document.aform.usgsfeed.value == "usgs_hour") {
alert("usgs_hour chosen");
else if( ...etc)
}
}
</script>
HTML:
<form name="aform">
<select size="1" name="usgsfeed" id="usgsfeed" onchange='SelectChanged();>
<option value="usgs_hour">Past hour, all earthquakes</option>
<option value="usgs_day" SELECTED>Past day, magnitude > 1</option>
<option value="usgs_week">Past week, magnitude > 2.5</option>
<option value="usgs_month">Past month, magnitude > 2.5</option>
<option value="none">None</option>
</select>
</form>
Solution 4
Have a look at the jsFiddle demo: jsfiddle.net/bWdaU/.
It uses onchange
to call the function display_usgs_change
.
I have added a temporary <div>
to show the selection working.
HTML:
<select id="usgsfeed" name="usgsfeed" size="1" onchange="display_usgs_change();">
<option value="usgs_hour">Past hour, all earthquakes</option>
<option value="usgs_day" selected="selected">Past day, magnitude > 1</option>
<option value="usgs_week">Past week, magnitude > 2.5</option>
<option value="usgs_month">Past month, magnitude > 2.5</option>
<option value="none">None</option>
</select>
<div id="dummy">Remove this div!</div>
JS:
function display_usgs_change() {
document.getElementById('dummy').innerHTML = event.target.value;
}
cba
Updated on July 09, 2020Comments
-
cba almost 4 years
I have different JavaScript function associated with each option tag to toggle layers on/off in an OpenLayers map. It works fine Opera, Firefox and IE9, but not in Chrome and Safari. I read that I could use onchange on the select tag, but since I'm new to JavaScript, I don't really how it would call four different functions?
<select size="1" name="usgsfeed" id="usgsfeed"> <option value="usgs_hour" onclick="display_usgs_hour();">Past hour, all earthquakes</option> <option value="usgs_day" onclick="display_usgs_day();" SELECTED>Past day, magnitude > 1</option> <option value="usgs_week" onclick="display_usgs_week();">Past week, magnitude > 2.5</option> <option value="usgs_month" onclick="display_usgs_month();">Past month, magnitude > 2.5</option> <option value="none" onclick="display_none();">None</option> </select>