哪里出问题了?

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<head>

</head>

<body>

var bb = "javascript"

var cc =5644655564165

document.write(bb.charAt(3)+" ");

document.write(bb.replace("java", "kkkk") + " ");

document.write(bb.toLowerCase() + " ");

document.write(bb.toUpperCase() + " ");

document.write(bb.split("va")+" "):

document.write(bb.substr(2,8)+" ");

document.write(bb.substring(3,7)+" ");

document.write(bb.concat(cc) + " ");

document.write(bb.indexOf("r")+" ");

var nn=new Array("12","578","1345","987");

var mm=new Array("hg""hu","hnh");

document.write(nn.join("-")+" ");

document.write(mm.revesre()+" ");

</script>

</body>

</html>

li274058914

浏览 1101回答 1

Caballarii

document.write(bb.split("va")+" "):写成了冒号 var mm=new Array("hg""hu","hnh");少一个逗号document.write(mm.revesre()+" ");reverse拼错了总共三个地方

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