load js file in runtime checking whether it is not loaded

Question

hi all

how it can be implemented that- load jquery file dynamically whether it is not loaded??? or if loaded then ignore further load.,.??

thanks

Answer 1

<script type="text/javascript">
if (typeof jQuery == 'undefined')
{
    document.write(unescape("%3Cscript src='/path/to/your/jquery' type='text/javascript'%3E%3C/script%3E"));
}
</script>

Answer 2

Have a look at getScript. It will load a script file, and a callback function is run when the loading is done.