按钮选中文本框内所有内容
<!--要完成此效果把如下代码加入到<head>区域中-->
<SCRIPT LANGUAGE="javascript">
function wh_showStatus(){
if (wh_StatusType == "left") {
wh_StatusText = " " + wh_StatusText;
}
else
if (wh_StatusType == "right") {
wh_StatusText = wh_StatusText.substring(1,wh_StatusText.length);
}
if (wh_StatusText == "" || wh_StatusText.length > 80) {
wh_StatusText = "Welcome to JavaScript Fairyland";
if (wh_StatusType == "right") {
while (wh_StatusText.length < 80) wh_StatusText = " " +
wh_StatusText;
}
}
status = wh_StatusText;
setTimeout("wh_showStatus()",wh_StatusSpeed);
}
wh_StatusText = "欢迎光临 网页教学网";
wh_StatusSpeed = 1000;
wh_StatusType = "left";
if (wh_StatusType == "right") {
while (wh_StatusText.length < 80) wh_StatusText = " " +
wh_StatusText;
}
setTimeout("wh_showStatus()",wh_StatusSpeed);
</SCRIPT>