The standard HTML5 validation rules we support for basic validation View Source interfaces/validation/HTMLValidationRules.ts, line 3 Members Type: string # max Optional Input must be at most this View Source interfaces/validation/HTMLValidationRules.ts, line 19 Type: number # maxlength Optional Input must be at most this long View Source interfaces/validation/HTMLValidationRules.ts, line 29 Type: string # min Optional Input must be at least this View Source interfaces/validation/HTMLValidationRules.ts, line 14 Type: number # minlength Optional Input must be at least this long View Source interfaces/validation/HTMLValidationRules.ts, line 24 Type: RegExp # pattern Optional Input must match this pattern View Source interfaces/validation/HTMLValidationRules.ts, line 34 Type: boolean | null # required Input is required View Source interfaces/validation/HTMLValidationRules.ts, line 10