两个Javascript的小问题,希望大家给予解答
问题一:
在页面上有一个多选框和一个按钮
<form id = form1>
<select multiple id = "EmployeeSel" name = "EmployeeSel" size = 28 style = "width:130"></select>
<input type = button id = DelAll name = DelAll value = 全部删除 style = "Cursor:hand" title = 删除所有项 LANGUAGE=javascript onclick="return DelAll_onclick()"></input>
</form>
如何实现一次全部删除多选框中的值?
问题二:
在页面上有一个iframe和一个按钮
<form id = form1 method = post>
<iframe src = "RevertContent.asp" id = "message" width = "100%" height = "100%"></iframe>
<script language="javascript">
frames.message.document.designMode = "On";
</script>
<input type = button id = Cancel name = Cancel value = 重写 style = "Cursor:hand" title = 清空您的回复 LANGUAGE=javascript onclick="return Cancel_onclick()"></input>
</form>
如何实现将iframe中页面的值清空?我用如下语句不行:
document.frames.message.document.body.innertHTML = "";