如何应用数值验证

Question

我想对整数进行验证，但是无效

function fnAllowNumeric() {
if ((event.keyCode < 48 || event.keyCode > 57) && event.keyCode != 8) {
event.keyCode = 0;
alert("Accept only Integer..!");
return false;
}
}

<td>
@Html.TextBoxFor(x => x.Items[i].ReceivedNumberOfCases, new { @class = "form-control text-right", @id="Received_"+ i ,@onkeyup = "outer.onChangeReceived("+ i +")" ,onkeypress="return fnAllowNumeric()"})
@Html.ValidationMessageFor(x=>x.Items[i].ReceivedNumberOfCases,null,new{@class="text-danger",@id="recivedCasesMessage_"+ i })&nbsp;
</td>

Answer 1

也许你可以尝试使用onblur:

<input onblur="return fnAllowNumeric(this)">

js:

function fnAllowNumeric(t) {
if (($(t).val() < 48 || $(t).val() > 57) && $(t).val() != 8) {
$(t).val(0)
alert("Accept only Integer..!");
return false;
}
}