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(chore) add mdn link for let and const (#29829)

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* (chore) add mdn link for let and const

Add further reading section and included mdn link for let and const

* fix: corrected link syntax
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Debalina
2019-02-17 19:11:19 -08:00
committed by Randell Dawson
parent 28276ae4af
commit fd3fbf50e5
1 changed files with 5 additions and 0 deletions
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guide/english/javascript/es6/let-and-const/index.md
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@ -81,3 +81,8 @@ console.log(LANGUAGES); // ['Js', 'Ruby', 'Python', 'Go', 'Java']
This may be little confusing.
Consider in this way. Whenever you define a const variable, Javascript references the address of the value to the variable. In our example the variable ‘LANGUAGES’ actually references to the memory allocated to the array. So you cannot change the variable to reference some other memory location later. Throughout the program it only references to the array.
## Further Reading
* [MDN - let](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let)
* [MDN - const](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const)