I use let only when i want to modify variable's value.
In below example you can't use const because the value of variable is modified by increment one until the condition is false.
for(leti=1;i<3;i++){console.log(i);// 1 and 2}
In below example, the constant variable(random) hold each values of that array.
for(constrandomof['a','b',1,2]){// Here it print values that held by constant random without modify itconsole.log(random);// a b 1 2}
Remember, to be constant does not mean to hold only single data. const can also hold list of data. Good example is array.
// Here constant colors is holding two colorconstcolors=['purple','black'];// First color is purpleconsole.log(colors[0]);// 'purple'// Second color is blackconsole.log(colors[1]);// 'black'
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I use let only when i want to modify variable's value.
In below example you can't use const because the value of variable is modified by increment one until the condition is false.
In below example, the constant variable(random) hold each values of that array.
Remember, to be constant does not mean to hold only single data. const can also hold list of data. Good example is array.