if('$DATE$'==cur_date){num++;}
<script type="text/javascript"> cur_date='$DATE$'; num=0; </script>
<script type="text/javascript"> $MYINF_X$; document.write('<span class="badge">'+num+'</span>'); </script>
var num = 0; if (num != 0) { console.log('что то делать'); } else { console.log('ничего не делать'); }
var num = 0; if (num != 0) { console.log('$MYINF_X$; document.write('<span class="badge">'+num+'</span>'); '); } else { console.log(''); }
var num = 0; if (num != 0) { document.write('<span class="badge">'+num+'</span>'); } else { console.log(''); }