2 spelling, I think. and some grammar.
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I tend to agree that only let"let" should be used in es6. AFIK, redeclaring a "set","let" generates an error (which is good) while, while with var"var", you simply override the value though strict mode(though "strict mode" in es5 takes care of hat in es5that too).

I tend to agree that only let should be used in es6. AFIK redeclaring a "set", generates an error (which is good) while with var you simply override the value though strict mode takes care of hat in es5 too).

I tend to agree that only "let" should be used in es6. AFIK, redeclaring a "let" generates an error (which is good), while with "var", you simply override the value (though "strict mode" in es5 takes care of that too).

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I tend to agree that only let should be used in es6. AFIK redeclaring a "set", generates an error (which is good) while with var you simply override the value though strict mode takes care of hat in es5 too).