What is the method for typing a constant?

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In most programming languages, the method for typing a constant involves using the keyword "const" followed by the name of the variable and its value. For example, in JavaScript, to declare a constant named "PI" that holds the value of 3.14159, you would type:

const PI = 3.14159;

Once this constant is declared, its value cannot be changed throughout the program. This provides a way to set variables that will not change during runtime and can be used by other parts of the program that need to reference the same value.