Hey there, I'm just getting started with JavaScript! I'm working on creating a syntax to determine if only one of three variables is present.
if a and (not b or not c) or b and (not a or not c) or c and (not a or not b)
Hey there, I'm just getting started with JavaScript! I'm working on creating a syntax to determine if only one of three variables is present.
if a and (not b or not c) or b and (not a or not c) or c and (not a or not b)
Give this a try:
if ((x || y || z) && !(x && y && z)) {
}
Check out this demonstration:
function checkConditions(x, y, z, output){
if ((x || y || z) && !(x && y && z)) {
console.log(output)
}
}
checkConditions(true, false, false, 'One true');
checkConditions(true, true, false, 'Two true');
checkConditions(true, true, true, 'All true'); // Shouldn't print anythingTransform them into boolean values, then add them together and verify that the total equals 1. (true will be converted to 1; false will be converted to 0.)
if (Number(Boolean(a)) + Number(Boolean(b)) + Number(Boolean(c)) === 1) {
// ...
}
alternatively
const sum = [a, b, c].reduce((total, item) => total + Number(Boolean(item)), 0);
if (sum === 1) {
// ...
}
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