javascript - How to append data to elements attribute value -

javascript - How to append data to elements attribute value -

having htmls this,

<a class="testdiv" href="/link1"></a> <a class="testdiv" href="/link2"></a>

i'm trying append ?param1=2 href attributes of <a> tags.

so should like,

<a class="testdiv" href="/link1?param1=2"></a> <a class="testdiv" href="/link2?param1=2"></a>

something this,

$(".testdiv").attr('href').append("?param1=2");

is there possible way this?

$(".testdiv").attr('href', function (_, currenthref) { homecoming currenthref +"?param1=2" });

javascript jquery html append