javascript 一个文本框输入完毕后自动跳转到下一个文本框的方法
<!DOCTYPE html>
<html>
<head>
<title>js24.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
<!-- 输入完毕之后光标自动移动到下一个框的方法 -->
<script type="text/javascript">
function moveNext(object,index){
if(object.value.length == 4){
document.forms[0].elements[index+1].focus();
}
}
function showResult(){
var f = document.forms[0];
var result="";
for(var i = 0; i<4 ;i++){
result += f.elements[i].value;
}
alert(result);
}
</script>
</head>
<body onload = "document.forms[0].elements[0].focus();">
<form>
<input type = "text" size = 3 maxlength=4 onkeyup = "moveNext(this,0);">-
<input type = "text" size = 3 maxlength=4 onkeyup = "moveNext(this,1);">-
<input type = "text" size = 3 maxlength=4 onkeyup = "moveNext(this,2);">-
<input type = "text" size = 3 maxlength=4 onkeyup = "moveNext(this,3);"><br>
<input type = "button" value = "显示所有" onclick = "showResult();">
</form>
</body>
</html>
