html-文本域显示输入字数

2023-11-07 23:59•html•阅读 4182

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>无标题文档</title>

</head>

function countChar(textareaNamezzjs,spanName){

document.getElementById(spanName).innerHTML=document.getElementById

(textareaNamezzjs).value.length;

}

</script>

<body>

已经输入<span >

</textarea>

</body>

</html>