📄 14-29.htm
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<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=gb2312">
<TITLE>window对象的focus()和blur()方法示例</TITLE>
<SCRIPT LANGUAGE="JavaScript">
var newWindow = null // declare global variable name，null相当于false
function makeNewWindow() {
if (!newWindow||newWindow.closed) { // check if window already exists
newWindow = window.open("","","width=350,height=150")
// store new window object in global variable
// assemble content for new window
var newContent = "<HTML><TITLE>新打开的子窗口</TITLE></HEAD>"
newContent += "<BODY bgColor='yellow'><H2>这是一个背景色为yellow的由主窗口打开的子窗口</H2>"
newContent += "<FORM><INPUT TYPE='button' VALUE='将主窗口放到前台' onClick='self.opener.focus()'>"
//self.opener用来指定主（父）窗口
newContent += "<INPUT TYPE='button' VALUE='将本窗口放到后台' onClick='self.blur()'>"
newContent += "</FORM></BODY></HTML>"
newWindow.document.write(newContent) // write HTML to new window document
} else {
newWindow.focus() // window already exists, so bring it forward
}
}
</SCRIPT>
</HEAD>
<BODY>
<H2>
<FONT face="华文彩云">本窗口是主窗口</FONT>
</H2>
<br>
<FONT size="4">单击下面的按钮将打开一个子窗口：</FONT>
<FORM>
<br>
<INPUT TYPE="button" NAME="newOne" VALUE="打开一个新的子窗口" onClick="makeNewWindow()">
</FORM>
</BODY>
</HTML>
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