为什么此代码中的“fullName”函数执行两次?
Person = Ember.Object.extend({
// these will be supplied by `create`
firstName: null,
lastName: null,
fullName: function() {
console.log('Full name function...');
var firstName = this.get('firstName');
var lastName = this.get('lastName');
return firstName + ' ' + lastName;
}.property('firstName', 'lastName')
});
App.tom = Person.create({
firstName: "Tom",
lastName: "Dale"
});
App.UsersView = Ember.View.create({
templateName: 'users',
users: [App.tom]
});
稍后在google-chrome控制台中:
App.tom.set('firstName', 'John')
此输出记录两次。
答案 0 :(得分:2)
看起来像一个错误,确实(添加了一个JSFiddle来说明:http://jsfiddle.net/MikeAski/GRvgt/)...
视图已重新呈现,并且计算属性尚未缓存。 : - (