我正在尝试使用 knockoutjs 将一个可观察的人员数组绑定到两个具有点击事件的两列响应式布局。
我创建了一个名为 TwoCol 的自定义绑定,它循环遍历数组,并将节点附加到 DOM 以创建我建议的布局,但是当我尝试在嵌套在循环中的自定义绑定中应用它们时,单击事件给我带来了麻烦。
我已经玩了很多,并且遇到了所有类型的结果,但是我现在在绑定期间调用我的 ~click~ 事件,而不是在点击时。
HTML:
<div data-bind="TwoCol: Friends" id="" style="padding: 20px">
JAVASCRIPT:
function FriendsModel() {
var self = this;
this.Friends = ko.observableArray();
this.SelectedFriend = "";
this.SetSelected = function (person) {
alert(person);
self.SelectedFriend = person;
}
}
function isOdd(num) {
return num % 2;
}
ko.bindingHandlers.TwoCol = {
update: function (elem, valueAccessor) {
var i = 0;
var rowDiv;
var vFriends = ko.utils.unwrapObservable(valueAccessor());
$(elem).html('');
while (i < vFriends.length) {
//create row container every other iteration
if (!isOdd(i)) {
rowDiv = document.createElement("div");
$(rowDiv).addClass("row-fluid");
elem.appendChild(rowDiv);
}
//add column for every iteration
var colDiv = document.createElement("div");
$(colDiv).addClass("span6");
rowDiv.appendChild(colDiv);
//actual code has fairly complex button html here
var htmlDiv = document.createElement("div");
var htmlButton = vFriends[i]
htmlDiv.innerHTML = htmlButton;
colDiv.appendChild(htmlDiv);
//i think i need to add the event to the template too?
//$(htmlDiv).attr("data-bind", "click: { alert: $data }")
//it seems that the SetSelected Method is called while looping
ko.applyBindingsToDescendants(htmlDiv, { click: friends.SetSelected(vFriends[i]) });
i++;
}
return { controlsDescendantBindings: true };
}
}
var friends = new FriendsModel();
friends.Friends.push('bob');
friends.Friends.push('rob');
friends.Friends.push('mob');
friends.Friends.push('lob');
ko.applyBindings(friends);