The reason you couldn’t assign the let variable is because you were declaring it at the same time, which you had already done. After a variable has been declared, just do a = 4 instead of let a = 4. Same goes for var, which you shouldn’t be using anyway.
However, if you do want a variable that can’t be re-assigned after the first time, use const instead of let.
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The reason you couldn’t assign the
letvariable is because you were declaring it at the same time, which you had already done. After a variable has been declared, just doa = 4instead oflet a = 4. Same goes forvar, which you shouldn’t be using anyway.However, if you do want a variable that can’t be re-assigned after the first time, use
constinstead oflet.