var fs = 'a12346z'
document.write('first:' + fs.slice(0, 1) + '<br />')
document.write('last :' + fs.slice(-1))
</script>
var fs = 'a12346z'
document.write('first:' + fs.slice(0, 1) + '<br />')
document.write('last :' + fs.slice(-1))
</script>