我无法访问我存储的地点'阵列。 Locations是一个对象文字,我试图根据我点击的当前元素访问title属性。我有以下代码,但我无法正确地将它发送到console.log。我的猜测是我使用了这个'和封闭功能不强。希望我能够很好地解释这一点,以便有人能够解释一下。任何反馈+解释都非常感谢。
(旁注:我的项目要求说我需要使用淘汰JS框架和MVVM格式)
<ul data-bind="foreach:locationsArray, click:goToLocation">
<li><span id="place" data-bind="text:title"></span></li>
</ul>
&#13;
2)Javascript ViewModel
var ViewModel = function() {
var self = this;
self.locationsArray = ko.observableArray(locations);
//My goal here is to log the current title of the location selected from the
//model. This is the part that is not working..
self.goToLocation = function(self) {
console.log(self.locations);
}
3)Javascript数据模型(JSON格式)
var locations = [
{
title: 'Nino\'s Pizza',
location: {
lat: 40.620057,
lng: -74.032894
}
},
{
title: 'Shore Road Bike Path',
location: {
lat: 40.623089,
lng: -74.040596
}
},
{
title: 'Paneantico Bakery',
location: {
lat: 40.619418,
lng: -74.0322818
}]
答案 0 :(得分:1)
您需要将点击事件附加到li
而不是ul
。
<ul data-bind="foreach:locationsArray">
<li><span id="place" data-bind="text:title, click:$parent.goToLocation"></span></li>
</ul>
此处,$parent
会告诉淘汰赛在goToLocation
而不是ViewModel
对象中寻找location
。
然后在你的js:
var ViewModel = function() {
var self = this;
self.locationsArray = ko.observableArray(locations);
// item will have the data of the clicked li
self.goToLocation = function(item) {
console.log(item);
}
}
ko.applyBindings(new ViewModel());
这是fiddle