敲除设置视图模型字段值

Knockout set view-model field value

Model 有一个字段 TotalCount。单击按钮时,如何更改其值?

    <input id="Qty" type="text" style="width:25px;" 
     value="@Model.TotalCount" />

    var pageKoModel;
    var pageKoModelData = @Html.Raw(Json.Encode(Model));
    $(document).ready(function () {
        pageKoModel = new Object();
        ko.mapping.fromJS(pageKoModelData, {}, pageKoModel);
        ko.applyBindings(pageKoModel);
    });

data-bind 不在代码中。因此,尝试用此代码替换输入字段

<input id="Qty" type="text" style="width:25px;" data-bind="
value:TotalCount" />

如果还是不行,试试

<input id="Qty" type="text" style="width:25px;" data-bind="
value:pageKoModel.TotalCount" />

这对我有用:

<input tabindex="1" type="text" data-bind="value: $root.TotalCount" maxlength="5" 
onkeypress="return onlyNumberKey(event);" style="width:35px;" />