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October 25, 2021 10:24 pm GMT

Var VS Let in Javascript

In Javascript, you can declare a variable using Var or let BUT there is an inconvenient, dont worry, I will give you context.
Some years ago(2015) Javascript changed. Var had a global scope before 2015, BUT with ecmascript6 it changed because We can use Let to declare a variable.
You shouldnt use Var because it is considered a bad practice , It can get you into a value reassignment problem.
Example:
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In this example I created a variable using var and printed on console three times to show you this
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You can see that the variable var was added to windows global object.
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BUT if you create a variable using LET, you wont have that problem, and the variable LET could be a local or global variable.
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I hope I have helped you by solving this question and You have saved time.
I look forward to your comments, have a nice day. =D


Original Link: https://dev.to/rych182/var-vs-let-in-javascript-2l47

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