為什么不起作用
<html>
??? <head>
??????? <script type="text/javascript">
??????????? function clock(){
??????????????? var time=new Data;
??????????????? document.getElementById("ab").value=time;
?????????? }
???????? var cd=setInterval("clock()",1000);
??????? </script>
??? </head>
??? <body>
??????? <form>
??????????? <input type="text" id="ab"/>
??????? </form>
??? </body>
</html>
2019-03-28
data 改成Date();
2019-03-28
<html>
??? <head>
??????? <script type="text/javascript">
??????????? function clock(){
??????????????? var time=new Date();
??????????????? document.getElementById("ab").value=time;
?????????? }
???????? var cd=setInterval("clock()",1000);
??????? </script>
??? </head>
??? <body>
??????? <form>
??????????? <input type="text" id="ab"/>
??????? </form>
??? </body>
</html>