如何在Knockout绑定输入中使用
jQuery UI Spinner小部件？
<tbody data-bind="foreach: orders">
<tr>
<td data-bind="text: Name"></td>
<td><input type="number" style="width: 100px;" data-bind="value: Price" /></td>
<td><input type="number" style="width: 50px;" data-bind="value: VAT" /></td>
<td><input type="number" style="width: 50px;" data-bind="value: Number" /></td>
<td data-bind="text: Final()"></td>
<td><a href="javascript:void(0);" data-bind="click: $root.removeOrder">Remove</a></td>
</tr>
</tbody>
解决方法
最好的方法是创建自定义绑定以将微调框绑定到输入：
ko.bindingHandlers.spinner = {
init: function(element,valueAccessor,allBindingsAccessor) {
//initialize spinner with some optional options
var options = allBindingsAccessor().spinnerOptions || {};
$(element).spinner(options);
//handle the field changing
ko.utils.registerEventHandler(element,"spinchange",function () {
var observable = valueAccessor();
observable($(element).spinner("value"));
});
//handle disposal (if KO removes by the template binding)
ko.utils.domNodeDisposal.addDisposeCallback(element,function() {
$(element).spinner("destroy");
});
},update: function(element,valueAccessor) {
var value = ko.utils.unwrapObservable(valueAccessor()),current = $(element).spinner("value");
if (value !== current) {
$(element).spinner("value",value);
}
}
};
然后只是使用它而不是值绑定：
<input
type="number"
style="width: 100px;"
data-bind="spinner: Price,spinnerOptions: { min: 0 } " />
