Conditional (ternary) operator shortcut for if-else - JavaScript | MDN

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Tue Nov 10 2020 18:15:43 GMT+0000 (Coordinated Universal Time)

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function example(…) {
    return condition1 ? value1
         : condition2 ? value2
         : condition3 ? value3
         : value4;
}

// Equivalent to:

function example(…) {
    if (condition1) { return value1; }
    else if (condition2) { return value2; }
    else if (condition3) { return value3; }
    else { return value4; }
}
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Conditional_Operator