Fedor Vlasenko

<?php
$str = ' <a href="/">link</a><span>span</span>  <a href="/2">link</a><script type="text/javascript">script</script>  <a href="/">link</a> ';
if(preg_match_all('/<a.*?href="(.*?)".*?>/', $str, $match)){
    echo '<pre>', print_r($match[1], true), '</pre>';
}

window.myAppTest = function(val){alert(val)}
myAppTest('Hi');