58. a=Trims ()<script type="text/javascript" language="javascript">
<!--
function Ltrim(str)
{
if(str.charAt(0)==" ")
{
str=str.substring(1,str.length)
str=Ltrim(str)
}
return str
}function Rtrim(str)
{
if(str.charAt(str.length-1)==" ")
{
str=str.substring(0,str.length-1)
str=Rtrim(str)
}
return str
}function trim(str)
{
var result
result=Ltrim(Rtrim(str))
document.all.text2.value=result
//alert(result.length)
}
//-->
</script><body >
去掉字串左右边的空格:
<input type="text" id="text1">
<input type="button" onclick="trim(document.all.text1.value)" value="show">
<input type="text" id="text2">
</body>56和57单独执行上面的Ltrim()和Rtrim()我不会正则,所以给出梅花雪斑竹的:
function Ltrim(str){return str.replace(/^\s+/, '');}
<!--
function Ltrim(str)
{
if(str.charAt(0)==" ")
{
str=str.substring(1,str.length)
str=Ltrim(str)
}
return str
}function Rtrim(str)
{
if(str.charAt(str.length-1)==" ")
{
str=str.substring(0,str.length-1)
str=Rtrim(str)
}
return str
}function trim(str)
{
var result
result=Ltrim(Rtrim(str))
document.all.text2.value=result
//alert(result.length)
}
//-->
</script><body >
去掉字串左右边的空格:
<input type="text" id="text1">
<input type="button" onclick="trim(document.all.text1.value)" value="show">
<input type="text" id="text2">
</body>56和57单独执行上面的Ltrim()和Rtrim()我不会正则,所以给出梅花雪斑竹的:
function Ltrim(str){return str.replace(/^\s+/, '');}
//51 a=LCase("VBSCript")
var a;
a = "VBSCript".toLowerCase();
document.write(a + "<br>");//52 a=Left ("abc",2)
a = "abc".substr(0, 2);
document.write(a + "<br>");
a="abc".substring(0, 2);
document.write(a + "<br>");//53 a=Log (1)
a = "abc".length;
document.write(a + "<br>");//54
var img = new Image();;
img.src = "http://www.csdn.net/images/homeimage/csdn.gif"//55 a=LTrim()
a = Math.log(1)
document.write(a + "<br>");//56
function String.prototype.Ltrim(){return this.replace(/(^\s*)/g, "");}
a = " test ".Ltrim();
document.write("|"+ a + "|<br>");//57 a=RTrim()
function String.prototype.Rtrim(){return this.replace(/(\s*$)/g, "");}
a = " test ".Rtrim();
document.write("|"+ a + "|<br>");//58 a=Trims ()
function String.prototype.Trim() {return this.replace(/(^\s*)|(\s*$)/g,"");}
a = " test ".Trim();
document.write("|"+ a + "|<br>");//59 a=Abs (-50.3)
a = Math.abs(-50.3);
document.write(a + "<br>");//60 a=4 * Atn(1)
a = 4 * Math.atan(1)
document.write(a + "<br>");
</script>
<script type="text/javascript" language="javascript">
<!--
function trim(str)
{
var start=0 //记录左边有多少空格
var end=0 //记录右边有多少空格
var result
var len=str.length if(len>0)
{
for(var i=0;i<len;i++)
{
if(str.charAt(i)==" ")
{
start++
}
else
{
break
}
} for(var j=len-1;j>=0;j--)
{
if(str.charAt(j)==" ")
{
end++
}
else
{
break
}
} result=str.substring(start,len-end)
document.all.text2.value=result
//alert(result.length) //检验字符串长度
}
}
//-->
</script><body >
去掉字串左右边的空格:
<input type="text" id="text1">
<input type="button" onclick="trim(document.all.text1.value)" value="show">
<input type="text" id="text2">
</body>顺便问一下楼主,能不能最后把你的这个系列整理一下,做成压包共享一下?