Master programming syntax, solve interactive challenges & run live code in Syntaxis Explore Arena →
menu_book Course Curriculum (Angular) expand_more
Angular / Forms

Custom validator

Learn Custom validator in Angular with a dedicated explanation, topic-specific example, edge guidance, and mastery check.

12 min read • Intermediate
angular-045.ts
ts
const even:ValidatorFn = c => Number(c.value)%2===0 ? null : {even:true};
What to watch
Content source & attribution
Original Syntaxis Content · Original Syntaxis Content