<html lang="en">
<head>
<title>字符串统计+小写转大写</title>
<script>
function Prompt(){
var content = prompt("输入数据类型:String","");
document.getElementById("result").innerHTML = "<font color = 'red'> 输入的内容: </font>"+content.big()
+"<br/><br/>"+"<font color = 'green'> 输入的内容的个数: </font>"+content.length+"<br/><br/>"
+"<font color = 'blue'> 输入的内容转换为大写: </font>"+content.toLocaleUpperCase()
+"<br/><br/>"+"<font color = 'red'> 输入的内容首字母大写: </font>"+content.substr(0,1).toLocaleUpperCase()+content.substr(1)
;
}
</script>
</head>
<body>
<center>
<h3>字符串统计+小写转大写</h3>
<div id = "result"></div>
<br/>
<button onclick = "Prompt()">输入数据</button>
</center>
</body>
</html>
截图:
![图片描述][1]