How to use JavaScript to change the form action [duplicate]

Question

My current code is as follows:

<div class="fr_search">      <form action="/"  accept-charset="UTF-8" method="post" id="search-theme-form">   .......   </form> </div> 

Now I want to write a function to change the form action and method, when a condition is met. How do I write this code?

For example,

function test() {    if (selectedIndex === 1).... } // How do I write this code? 

Answer 1

function chgAction( action_name ) {     if( action_name=="aaa" ) {         document.search-theme-form.action = "/AAA";     }     else if( action_name=="bbb" ) {         document.search-theme-form.action = "/BBB";     }     else if( action_name=="ccc" ) {         document.search-theme-form.action = "/CCC";     } } 

And your form needs to have name in this case:

<form action="/"  accept-charset="UTF-8" method="post" name="search-theme-form" id="search-theme-form">