javascript 如何使用 Ember.js Array forEach 更改值？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/17976333/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
how to change value with Ember.js Array forEach?
提问by seagod
self.resultList.forEach(function(item, index, enumerable){
console.log(self.resultList);
item.id=11;
item.get('id');
});
the item like this:
像这样的项目：
if item.id = 11;the exception like this:
如果item.id = 11;异常是这样的：
Assertion failed: You must use Ember.set() to access this property (of [object Object])
断言失败：您必须使用 Ember.set() 来访问此属性（[object Object]）
so item.get('id') or item.set('id',11)
所以 item.get('id') 或 item.set('id',11)
the exception like this
像这样的例外
Uncaught TypeError: Object # has no method 'get'
未捕获的类型错误：对象 # 没有方法“get”
is this item not the Ember's Object?so what the item is?
这件物品不是 Ember's Object 吗？那件物品是什么？
could someone tell me how to change the 'itme.id's value..
有人可以告诉我如何更改“itme.id”的值..
Thanks a million
太感谢了
回答by Marcio Junior
You can use the Ember.set(yourObject, propertyName, value);and Ember.get(yourObject, propertyName);to safely set and get properties.
您可以使用Ember.set(yourObject, propertyName, value);和Ember.get(yourObject, propertyName);来安全地设置和获取属性。
In your case:
在你的情况下：
self.resultList.forEach(function(item, index, enumerable) {
Ember.set(item, "id", 11);
Ember.get(item, "id");
});
回答by bedrosenator
In my case I did it in this way
就我而言，我是这样做的
//In my controller I've defined the array
displayInfoCheckboxes: [
{
turnover: {
label: "Turnover",
value: 1,
propertyName: "turnover"
}
}, {
pl: {
label: "P&L",
value: 1
}
}
]
//and in my handler I passed the full string path to the property in the set method
let displayInfoCheckboxes = this.get('displayInfoCheckboxes');
let controller = this;
displayInfoCheckboxes.forEach(function(items,index) {
for (var key in items) {
controller.set('displayInfoCheckboxes.' + index + '.' + key + '.value', false);
}
})