javascript sum of numbers

1const arrSum = arr => arr.reduce((a,b) => a + b, 0)

1const sum = arr => arr.reduce((a, b) => a + b, 0);

1
2var price1 = 5;
3var price2 = 6;
4
5var total = price1 + price2;
6
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1arr.reduce((a, b) => a + b)

1
2x = x + 5 
3 

1
2var pi = 3.14;
3
4var person = "John Doe";
5
6var answer = 'Yes I am!';
7