javascript当中onblur和onfocus用法
例 1.1 onblur和onfocus
马克-to-win:onblur失去焦点和onfocus得到焦点事件。
<script LANGUAGE="JavaScript">
</script>
we can not leave the following input blank.
用户名:
更多内容请见原文,文章转载自:https://blog.csdn.net/qq_43650923/article/details/100175654