“Scroll” to the very right of a long text input

All browsers except IE6-8/Opera

Set HTMLInputElement.setSelectionRange() to the length of the input value after explicitly setting the focus(). The disadvantage is that it scrolls back to start once blurred.

var foo = document.getElementById("foo");
foo.value = "http://stackoverflow.com/questions/1962168/scroll-to-the-very-right-of-a-long-text-input";
foo.focus();
foo.setSelectionRange(foo.value.length,foo.value.length);
<input id="foo">  

All browsers except IE/Opera

If you don’t care about IE in its entirety, then set Element.scrollLeft to Element.scrollWidth. The disadvantage is the less browser support.

var foo = document.getElementById("foo");
foo.value = "http://stackoverflow.com/questions/1962168/scroll-to-the-very-right-of-a-long-text-input";
foo.scrollLeft = foo.scrollWidth;
<input id="foo">

All browsers

If you’d like to support every single browser, consider to trick it with the dir (direction) attribute which you set to rtl (right-to-left). The disadvantage is that it’s a hack which really need to be taken into consideration when it’s editable and/or you develop a direction sensitive website, but this works on all browsers and is great on readonly inputs.

var foo = document.getElementById("foo");
foo.value = "http://stackoverflow.com/questions/1962168/scroll-to-the-very-right-of-a-long-text-input";
<input id="foo" dir="rtl">  

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