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JS自带函数var a = "hello";var b = ",world";var c = a.concat(b);alert(c);//c = "hello,world"var index1 = a.indexOf("l");//index1 = 2var index2 = a.indexOf("l",3);//index2 = 3

1、document.getElementById("TextBox1").value //好2、document.getElementById(" ").value //更好3、如果用到母版页的话ID可能会被改掉 就是前面加一串东西出来 这时候如果不行的话 运行后查看源文件能获得真实的ID -->直接找。。。。。

function ShowMDialog(URL,Width,Height,scrollbars){     return window.showModalDialog(URL,"","dialogWidth:"+Width+"px;dialogHeight:"+Height+"px; status:no;directories:no; scrollbars:"+scrollbar

字符串(String)   1.声明     var myString = new String("Every good boy does fine.");     var myString = "Every good boy does fine.";   2.字符串连接     var myString = "Every " + "good boy " + "does f

var se,m=0,h=0,s=0,ss=1;function second(){if((ss%100)==0){s+=1;ss=1;}if(s>0 && (s%60)==0){m+=1;s=0;}if(m>0 && (m%60)==0){h+=1;m=0;}t=h+"时"+m+"分"+s+"秒"+ss+"毫秒";document.getElementById("sh