Change the nulll to null in readme

pull/20/head
nyan-lin-tun 6 years ago
parent fc0b62b7f6
commit 0c882746ec

@ -421,7 +421,7 @@ console.log(firstName); //not defined, because it is not assigned to a value yet
Null in JavaScript means an empty value.
```js
let emptyValue = nulll
let emptyValue = null
```
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