Hands-On Data Structures and Algorithms with JavaScript

Using ternary operators and Boolean || or &&

It is always suggested to keep your code readable but, when warranted, use the ternary operators to make your code concise and readable:

if(cond1) {    var1 = val1;} else {    var1 = val2}if(cond2) {    var2 = val3;} else {    var2 = val4}

For example, the preceding code can be condensed as follows:

var1 = cond1 ? val1 : val2;var2 = cond2 ? val3 : val4;

Setting default values can also be achieved easily as follows:

var1 = ifThisVarIsFalsy || setThisValue;var2 = ifThisVarIsTruthy && setThisValue;