How do you remove all the options of a select box and then add one option and select it with jQuery?
$('#mySelect')
.find('option')
.remove()
.end()
.append('<option value="whatever">text</option>')
.val('whatever')
;
$('#mySelect')
.empty()
.append('<option selected="selected" value="whatever">text</option>')
;
why not just use plain javascript?
document.getElementById("selectID").options.length = 0;