Select” elemetns must not contain an “onchange” attribute

Severity code: Severe error

Actions like “onchange” can take control away from users who are trying to navigate the page. Using an “onchange” attribute for things like select-list menus should instead be replaced with a drop-down and a button which initiates the action.

Example

Wrong

<form><select onchange="location = this.options[this.selectedIndex].value;"><option value="home.html">Home Page</option><option value="dog.html">My Dog</option></select></form>