我使用第三方插件使表格可编辑。所以我需要为 <td> 创建一个自定义绑定,以便插件引起的对文本的任何更改都会触发视图模型更新。但是自定义绑定不显示正确的数据,而不是内置的“文本”绑定。我做错什么了吗?
请参阅:http: //jsfiddle.net/VbeBA/5
HTML:
<table id="table1" cellspacing="0" cellpadding="0" border="0">
<tr>
<th style="width:150px">Product</th>
<th>Price ($)</th>
<th>Quantity</th>
<th>Amount ($)</th>
</tr>
<tbody data-bind='template: {name: "orderTemplate", foreach: orders}'></tbody>
</table>
<script type="text/html" id="orderTemplate">
<tr>
<td data-bind="text: product">${product}</td>
<td class="editable number" data-bind="dataCell: price"></td>
<td class="editable number"data-bind="dataCell: quantity">${quantity}</td>
<td class="number" data-bind="text: amount">${amount}</td>
</tr>
</script>
CSS:
table
{
border: solid 1px #e8eef4;
border-collapse: collapse;
}
table th
{
padding: 6px 5px;
background-color: #e8eef4;
border: solid 1px #e8eef4;
}
table td
{
padding:0 3px 0 3px;
margin: 0px;
height: 20px;
border: solid 1px #e8eef4;
}
td.number
{
width: 100px;
text-align:right;
}
td.editable
{
background-color:#fff;
}
td.editable input
{
font-family: Verdana, Helvetica, Sans-Serif;
text-align: right;
width: 100%;
height: 100%;
border: 0;
}
td.editing
{
border: 2px solid Blue;
}
脚本:
$(function () {
ko.bindingHandlers.dataCell = {
init: function (element, valueAccessor) {
ko.utils.registerEventHandler(element, "change", function () {
var value = valueAccessor();
value($(element).text());
});
},
update: function (element, valueAccessor, allBindingsAccessor, viewModel) {
var value = valueAccessor();
$(element).text(value);
}
};
var order = function (product, price, quantity) {
this.product = product;
this.price = ko.observable(price);
this.quantity = ko.observable(quantity);
this.amount = ko.dependentObservable(function () {
return this.price() * this.quantity();
}, this);
}
var ordersModel = function () {
this.orders = ko.observableArray([]);
}
var viewModel = new ordersModel();
viewModel.orders = ko.observableArray([
new order("Gala Apple", 0.79, 150),
new order("Naval Orange", 0.29, 500)
]);
ko.applyBindings(viewModel);
$(".editable").change();
});