<script type="text/javascript">
$(document).ready(function(){
$('#url').on('keyup',function(){
if($.trim($(this).val()) != '' && $(this).val().length > 5){
let result = check_URL_regex($(this).val());
if(result === false){
$('span.error').removeClass('true').text('URL format invalid');
}else{
$('span.error').addClass('true').text('URL format valid');
}
}else{
$('span.error').removeClass('true').text('');
}
})
});
function check_URL_regex(url){
let regexp2 = new RegExp('^((ft|htt)ps?:\\/\\/)?'+
'((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|'+
'((\\d{1,3}\\.){3}\\d{1,3}))'+
'(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*'+
'(\\?[;&a-z\\d%_.~+=-]*)?'+
'(\\#[-a-z\\d_]*)?$','i');
if (regexp2.test(url)) {
return true;
}else{
return false;
}
}
</script>
