I trigger onchange attribute in input depending on a specific process. However, even if I "Event" as a parameter, I continue to get the error below. Also, alternatively, I tried Event.StopPropagation () and Return False but the problem is ongoing.
$(function () {
test();
});
function test(obj) {
var inputValue = parseInt($(obj).val());
if (($(obj).val() < 0 || $(obj).val() > 100) && event.keyCode !== 46 // keycode for delete
&& event.keyCode !== 8 // keycode for backspace
) {
event.preventDefault();
$(obj).val(0);
} else if (isNaN(inputValue)) {
event.preventDefault();
$(obj).val(0);
}
}<script src="https://code.jquery.com/ui/1.13.0/jquery-ui.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.0/jquery.min.js"></script>
<div>
<input id="weightInput" type="number" class="form-control weightInput" data-key="" data-guid="" onchange="test(this)" value="" />
</div>You need to pass event as an explicit argument to the onchange argument.
You also shouldn't call it from $(function() { }), since there's no event there.
function test(obj, event) {
var inputValue = parseInt($(obj).val());
if (($(obj).val() < 0 || $(obj).val() > 100) && event.keyCode !== 46 // keycode for delete
&&
event.keyCode !== 8 // keycode for backspace
) {
event.preventDefault();
$(obj).val(0);
} else if (isNaN(inputValue)) {
event.preventDefault();
$(obj).val(0);
}
}<script src="https://code.jquery.com/ui/1.13.0/jquery-ui.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.0/jquery.min.js"></script>
<div>
<input id="weightInput" type="number" class="form-control weightInput" data-key="" data-guid="" onchange="test(this, event)" value="" />
</div>You should be using jQuery's listener to handle the event that isnt defined in your current code. You should also use the events target as your object
/***This here**/
jQuery(document).on('change','#weightInput',test);
function test(event) {
let obj = event.target
var inputValue = parseInt($(obj).val());
if (($(obj).val() < 0 || $(obj).val() > 100) && event.keyCode !== 46 // keycode for delete
&& event.keyCode !== 8 // keycode for backspace
) {
event.preventDefault();
$(obj).val(0);
} else if (isNaN(inputValue)) {
event.preventDefault();
$(obj).val(0);
}
}