程序笔记

刷新当前页:window.location.reload();

当前窗口打开页面:
用window.open("","_self")  
或者  
window.location.replace("newurl")

限制textarea框字数
function countlen(textarea){  
 if (textarea.value.length>400){
 alert("字符输入已满!");
 textarea.value=textarea.value.substring(0,400);  
}

只替换第一个<
<script language="javascript">
var str="</SheetItems><ElectricalStatus>";
str=str.replace("<","!");
alert(str);
</script>
替换所有的<
<script language="javascript">
var str="</SheetItems><ElectricalStatus>";
str=str.replace(/\</g,"!");
alert(str);
</script>

去php.ini中修改可上传文件大小
     upload_max_filesize = 20
         memory_limit = 20
         post_max_size = 20
         修改后重启服务器~
到php.ini里去改上传最大显示 upload_max_filesize="2M"

针对sql语句连接的有效解决办法:
where 1=1 $sql and 1=1

js实现按钮状态:
$(bname).style.visibility="visible"; 
$(bname).disabled=false; 
文本框属性中添加不可用属性:
disabled="disabled";
字符串截取:
var name = Request.responseText.split("说")[0];
$a2 = Request.responseText.indexOf("g")+1;
$b2 = Request.responseText.indexOf("说");
var name2 = Request.responseText.substring($a2,$b2);

09年最“胸的”女生:选秀选手不满评委当场扔胸罩
http://www.51sdj.com/phpcms/article/2009/0717/article_253.html

posted @ 2009-07-17 08:13  专心专注专一  阅读(234)  评论(0编辑  收藏  举报