jeena/en.javascript.info
1
0
Fork 0
Code Issues Pull requests Projects Packages Wiki Activity Actions

Update article.md

Browse source 
Grammar
This commit is contained in:
hrodward 2019-10-21 10:50:02 +02:00 • committed by GitHub
parent 30e3fa7237
commit 5c6be4c8bc
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

8
1-js/07-object-properties/01-property-descriptors/article.md
View file

@ -3,7 +3,7 @@
As we know, objects can store properties.
Till now, a property was a simple "key-value" pair to us. But an object property is actually a more flexible and powerful thing.
Until now, a property was a simple "key-value" pair to us. But an object property is actually a more flexible and powerful thing.
In this chapter we'll study additional configuration options, and in the next we'll see how to invisibly turn them into getter/setter functions.
@ -134,7 +134,7 @@ let user = { };
Object.defineProperty(user, "name", {
*!*
value: "John",
// for new properties need to explicitly list what's true
// for new properties we need to explicitly list what's true
enumerable: true,
configurable: true
*/!*
@ -148,7 +148,7 @@ user.name = "Pete"; // Error
Now let's add a custom `toString` to `user`.
Normally, a built-in `toString` for objects is non-enumerable, it does not show up in `for..in`. But if we add `toString` of our own, then by default it shows up in `for..in`, like this:
Normally, a built-in `toString` for objects is non-enumerable, it does not show up in `for..in`. But if we add a `toString` of our own, then by default it shows up in `for..in`, like this:
```js run
let user = {
@ -162,7 +162,7 @@ let user = {
for (let key in user) alert(key); // name, toString
```
If we don't like it, then we can set `enumerable:false`. Then it won't appear in `for..in` loop, just like the built-in one:
If we don't like it, then we can set `enumerable:false`. Then it won't appear in a `for..in` loop, just like the built-in one:
```js run
let user = {