Constant is a variable that, when we assign a value to the Constant, this value will not change.Variable is a variable that can be changed.Constant and Variable assignment will start with a name and configure the type of data (such as numbers or text).Before we can use a constant or variable, the interpreter must be declared before use, always call it Keyword must be set to the variable declared as follows:Use the let for the constantUse var for the variableThe following is a code example for Constant and Variable.
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