x
1
<script>2
function ucfirst(str) {3
str += '';4
var f = str.charAt(0).toUpperCase();5
return f + str.substr(1);6
}7
8
document.write(ucfirst('hello world!'));9
</script>10
<script>function ucfirst(str) { str += ''; var f = str.charAt(0).toUpperCase(); return f + str.substr(1);}document.write(ucfirst('hello world!'));</script>