Javascript ESLint 不允许 in
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ESLint doesn't allow for in
提问by user7334203
I have an object
我有一个对象
currentValues= {hey:1212, git:1212, nmo:12121}
and I use for in like this:
我像这样使用 for：
for (const key in currentValues) {
if (Object.prototype.hasOwnProperty.call(currentValues, key)) {
yield put(setCurrentValue(key, currentValues[key]));
}
}
ESLint shows me an error which is saying:
ESLint 向我展示了一个错误：
ESLint: for..in loops iterate over the entire prototype chain, which is virtually never what you want. Use Object.{keys,values,entries}, and iterate over the resulting array. (no-restricted-syntax
ESLint: for..in 循环遍历整个原型链，这实际上永远不是你想要的。使用 Object.{keys,values,entries}，并迭代结果数组。（无限制语法
How should I edit my code?
我应该如何编辑我的代码？
回答by rishipuri
It says,
它说，
Use Object.{keys,values,entries}, and iterate over the resulting array.
使用 Object.{keys,values,entries}，并迭代结果数组。
So you could do something like this to get the object keys as an array and then loop through the keys to make necessary changes.
所以你可以做这样的事情来获取对象键作为数组，然后遍历键进行必要的更改。
currentValues= {hey:1212, git:1212, nmo:12121}
Object.keys(currentValues).forEach(function(key) {
yield put(setCurrentValue(key, currentValues[key]));
})回答by user7334203
I used the following:
我使用了以下内容：
const keys = Object.keys(currentValues);
const values = Object.values(currentValues);
for (let i = 0; i < keys.length; i += 1) {
yield put(setCurrentValue(keys[i], values[i]));
}
This is correct and without ESLint errors.
这是正确的，没有 ESLint 错误。
回答by quirimmo
You can get the array of all your values inside your object just doing
您可以在对象中获取所有值的数组
var myValuesInArray = Object.values(currentValues);
回答by Daher
try this instead:
试试这个：
Object.keys(currentValues).map(key => (yield put(setCurrentValue(key, currentValues[key]))));
回答by Andres Felipe
I know it is similar to the above, but here is a full example:
我知道它与上面的类似，但这里有一个完整的例子：
const data = res.data;
const keys = Object.keys(data);
const values = Object.values(data);
for (let i = 0; i <= keys.length; i += 1) {
if (Object.prototype.hasOwnProperty.call(values, i)) {
this.rows.push({
name: values[i].name,
email: values[i].email,
address: values[i].address,
phone: values[i].phone,
role: values[i].role,
});
}
}
回答by jakow
Using for...inwill iterate over all properties including those from Object prototype. I am not sure why you are doing Object.prototype.hasOwnProperty.call(currentValues, key)instead of just:
currentValues.hasOwnProperty(key).
I think this should make ESLint aware that you are filtering for own properties only.
Usingfor...in将迭代所有属性，包括来自 Object 原型的属性。我不确定您为什么要这样做，Object.prototype.hasOwnProperty.call(currentValues, key)而不仅仅是：
currentValues.hasOwnProperty(key)。我认为这应该让 ESLint 意识到您只过滤自己的属性。
However, I suggest using for (const key of Object.keys()), which is more semantic.
但是，我建议使用for (const key of Object.keys())，它更具语义。
