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- //Old way of using var
- var myAge = 27; //this can change
- var myGender = "Male"; //this cannot change
- //To express the above in the new way
- let myAge = 27; //I use let because my age will always change
- const myGender = "Male";
- /**
- * Below will give a Type Error:
- * because a predefined const should not change
- */
- myGender = "Female"; //Error
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