javascript一段时间代码
<SCRIPT language=javaScript>
<!--
now = new Date(),hour = now.getHours()
if(hour < 6){document.write("凌晨好!")}
else if (hour < 9){document.write("早上好！")}
else if (hour < 12){document.write("上午好！")}
else if (hour < 14){document.write("中午好！")}
else if (hour < 17){document.write("下午好！")}
else if (hour < 19){document.write("傍晚好！")}
else if (hour < 22){document.write("晚上好！")}
else {document.write("夜里好!")}
// -->
</SCRIPT>
今天是
<SCRIPT language=JavaScript><!--
var dayNames = new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
Stamp = new Date();
document.write("" + Stamp.getYear() + "年"+(Stamp.getMonth() + 1) +"月"+Stamp.getDate()+ "日"+ "");
//--></SCRIPT>
相关文档：
最近在CSDN上有人问，怎么用JS循环26个英文字母，想都没想，写下以下代码
<script type="text/javascript">
<!--
var character = new Array("A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","X","Y","Z");
for(var i=0;i<25;i++)
{
alert(character[i]);
}
......
求 555.555的四舍五入保留两位小数
使用Math.round 怎么都算不对,结果都是555.55 ,貌似是因为java计算浮点数时会莫名其妙在结尾跟上一串数字 比如555.55500000003
无奈只能写这个方法
function round(a,b){
var s=a.toString().indexOf(".");
a0=a.toString().substr(0,s+b+1);
a1=Math.round(a.toString().sub ......
String.replace(regexp, replaceText); 这是String类中的replace方法原型
replace方法接受两个参数:
regexp: 正则表达式, 用来在字符串中搜索的规则.
replaceText: 用来替换字符串中匹配正则表达式的子串的字符串
在JavaScript中, 支持正则替换, 正则替换的规则如下:
$$: 原意打印一个$符号
$&: 与规则匹配的整个 ......
IE可以调用：
<script type="text/javascript">
// 说明：获取页面上选中的文字
// 整理：http://www.CodeBit.cn
function getSelectedText() {
if (window.getSelection) {
// This technique is the most likel ......
