Conditionals

if / else if / else

Execute different blocks based on conditions.

Ternary

condition ? trueVal : falseVal

switch

Compare one value against multiple cases. Add break to prevent fall-through.

??

Nullish coalescing: a ?? "default"

Example

const score=75;
if(score>=90) console.log('A');
else if(score>=70) console.log('B');
else console.log('C or below');

const pass=score>=60?'Pass':'Fail';

const name=null;
console.log(name??'Guest'); // 'Guest'

JAVASCRIPT

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