if else variable javascript single line code example

Example 1: one line if else if statement javascript

var variable = (condition) ? (true block) : ((condition2) ? (true block2) : (else block2))

Example 2: javascript if one line

/* When width is <= 600 breakpoint is 1, when width is between 600 and 1000 breakpoint is 2, else is 4 */
let breakpoint = width <= 600 ? 1 : width <= 1000 && width > 600 ? 2 : 4; // Breakpoint observer code