我在knockout.js中使用了jquery dataTable。我正在使用remove link从函数生成数据行。它将删除行表格以及形成可观察数组。删除链接可以工作一次并从表中删除行但是当我试图删除另一个时,他们不会删除它。
您可以在此处查看http://jsfiddle.net/zongweil/PLUKv/1/
$(document).ready(function () {
/* Custom binding */
ko.bindingHandlers.dataTable = {
init: function (element, valueAccessor) {
var binding = ko.utils.unwrapObservable(valueAccessor());
// If the binding is an object with an options field,
// initialise the dataTable with those options.
if (binding.options) {
$(element).dataTable(binding.options);
}
},
update: function (element, valueAccessor) {
var binding = ko.utils.unwrapObservable(valueAccessor());
// If the binding isn't an object, turn it into one.
if (!binding.data) {
binding = {
data: valueAccessor()
};
}
// Clear table
$(element).dataTable().fnClearTable();
// Rebuild table from data source specified in binding
$(element).dataTable().fnAddData(binding.data());
}
};
/* Object code */
function GroupMember(id, name, isGroupLeader) {
var self = this;
self.id = id;
self.name = name;
self.isGroupLeader = ko.observable(isGroupLeader);
self.link = ko.computed(function () {
return "/#user/" + self.id;
});
self.nameWithLink = ko.computed(function () {
return '<a href="' + self.link() + '">' + self.name + '</a>';
});
self.actions = ko.computed(function () {
return '<a class="btn btn-danger" data-bind="click: function() {removeMember(' + self.id + ')}">' + '<i class="icon-minus-sign"></i>' + '</a>';
});
}
/* View model */
var groupViewModel = {
groupMembers: ko.observableArray([
new GroupMember("1", "Abe", true),
new GroupMember("2", "Bob", false),
new GroupMember("3", "Bill", false)])
};
groupViewModel.membersTable = ko.computed(function () {
var self = this;
var final_array = new Array();
for (var i = 0; i < self.groupMembers().length; i++) {
var row_array = new Array();
row_array[0] = self.groupMembers()[i].nameWithLink();
row_array[1] = self.groupMembers()[i].actions();
final_array.push(row_array);
}
return final_array;
}, groupViewModel);
groupViewModel.removeMember = function (id) {
var self = this;
self.groupMembers.remove(function (groupMember) {
return groupMember.id == id;
});
};
ko.applyBindings(groupViewModel);
});
答案 0 :(得分:0)
当您在自定义绑定的fnClearTable
功能中调用update
时,您可以清除淘宝网背后的部分DOM。
然后通过调用fnAddData
添加新的DOM元素。
您的按钮使用click
绑定。要使click
绑定工作,必须applyBindings
。
如果您希望继续使用dataTable
和click
绑定来使用DOM,则每次进行更改时都必须手动应用绑定。在您的init
方法中,让淘汰赛知道您正在处理后代绑定:
return { controlsDescendantBindings: true };
在update
方法中,手动应用绑定:
ko.applyBindingsToDescendants(viewModel, element);
这可确保您的click
绑定再次有效。
以下是添加此代码的示例:http://jsfiddle.net/5t15rhyq/