Results for “behavior”
Small, practical examples. Search by task or narrow things down below.
Identify the selected submit action
HTML: Each submit button can supply its own named value for the same form.
HTML✓ Tested
Include a nonvisible value in form data
HTML: A named hidden input contributes data without adding a visible editing control.
HTML✓ Tested
Keep an action button from submitting a form
HTML: Specify type button for controls whose purpose is a local action.
HTML✓ Tested
List an object’s own enumerable keys
JavaScript: Object.keys omits inherited and non-enumerable properties.
JavaScript✓ Tested
List an object’s own enumerable keys
TypeScript: Object.keys omits inherited and non-enumerable properties.
TypeScript✓ Tested
Make an unavailable select option unselectable
HTML: A disabled option remains visible but cannot be selected through normal keyboard navigation.
HTML✓ Tested
Prevent runtime changes to top-level properties
JavaScript: Object.freeze prevents ordinary top-level mutations; Reflect.set reports the rejected update without throwing.
JavaScript✓ Tested
Prevent runtime changes to top-level properties
TypeScript: Object.freeze prevents ordinary top-level mutations; Reflect.set reports the rejected update without throwing.
TypeScript✓ Tested
Read an object’s own enumerable values
JavaScript: Object.values provides values without their corresponding keys.
JavaScript✓ Tested
Read an object’s own enumerable values
TypeScript: Object.values provides values without their corresponding keys.
TypeScript✓ Tested
Remove a Map entry and detect whether it existed
JavaScript: Map.delete returns true only when an entry was present.
JavaScript✓ Tested
Remove a Map entry and detect whether it existed
TypeScript: Map.delete returns true only when an entry was present.
TypeScript✓ Tested