![]() ![]() …and corresponding (X)HTML markup (abbreviated for clarity): Here is the JavaScript code (place within the document head):ĭocument.getElementById('element').focus() The Tab key ignores such elements, but method elem.focus() works.įor instance, here’s a list.After digging through the WordPress source code, I stumbled upon this very useful JavaScript method for auto-focusing form elements upon page load. Tabindex="-1" allows only programmatic focusing on an element. To make an element a part of the form on par with. Usually it’s used to make an element focusable, but keep the default switching order. That is, when we switch elements, elements with tabindex=0 go after elements with tabindex ≥ 1. Tabindex="0" puts an element among those without tabindex. a regular ).Įlements without matching tabindex are switched in the document source order (the default order). The switch order is: elements with tabindex from 1 and above go first (in the tabindex order), and then elements without tabindex (e.g. That is: if we have two elements, the first has tabindex="1", and the second has tabindex="2", then pressing Tab while in the first element – moves the focus into the second one. The value of the attribute is the order number of the element when Tab (or something like that) is used to switch between them. This can be changed using HTML-attribute tabindex.Īny element becomes focusable if it has tabindex. ![]() The method elem.focus() doesn’t work on them, and focus/blur events are never triggered. On the other hand, elements that exist to format something, such as, , – are unfocusable by default. The list varies a bit between browsers, but one thing is always correct: focus/blur support is guaranteed for elements that a visitor can interact with:, ,, and so on. Allow focusing on any element: tabindexīy default, many elements do not support focusing. If we want to track user-initiated focus-loss, then we should avoid causing it ourselves. The best recipe is to be careful when using these events. These features sometimes cause focus/blur handlers to misbehave – to trigger when they are not needed. If it is reinserted later, then the focus doesn’t return. If an element is removed from DOM, then it also causes the focus loss.An alert moves focus to itself, so it causes the focus loss at the element ( blur event), and when the alert is dismissed, the focus comes back ( focus event).But also JavaScript itself may cause it, for instance: One of them is when the visitor clicks somewhere else. ![]()
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