Tell me where the error in this code
<script type="text/javascript"> var a = new Array(2, 5, 7); var b = new Array(); while (true) { var x = prompt("vashe chislo", "0"); x = +x; if (x == 0) { break } for (var i = 0; i < a.length; i++) { if (a[i] == 0) { b[i] = "-"; continue; } b[i] = x / a[i]; } alert(+a "\n" ("+x+")"\n" + b); } </script>