<script>
vat s="d dsf dsf sdsdf "
s2=""
for(var i=0;i<s.length;i++)
{
if(s.substr(i,1)!=" ") s2+= s.substr(i,1)
}
alert(s2)
</script>
vat s="d dsf dsf sdsdf "
s2=""
for(var i=0;i<s.length;i++)
{
if(s.substr(i,1)!=" ") s2+= s.substr(i,1)
}
alert(s2)
</script>
var s="d dsf dsf sdsdf "
s2=""
for(var i=0;i<s.length;i++)
{
if(s.substr(i,1)!=" ") s2+= s.substr(i,1)
}
alert(s2)
</script>
去掉左右空格<script language=javascript>
String.prototype.Trim = function()
{
return this.replace(/(^\s*)|(\s*$)/g, "");
}
String.prototype.LTrim = function()
{
return this.replace(/(^\s*)/g, "");
}
String.prototype.RTrim = function()
{
return this.replace(/(\s*$)/g, "");
}
sStr=new String(" dfgdg fgdfg ")
alert("["+sStr+"]")
alert("["+sStr.LTrim()+"]")
alert("["+sStr.RTrim()+"]")
alert("["+sStr.Trim()+"]")
</script> 意兴阑珊
var s="d dsf dsf sdsdf "
alert(s.replace(/\s/g,""))
</script>
var s="d dsf dsf sdsdf "
s2=s.replace(/ /g,"")
alert(s2)
</script>
var mystring=" hello ";
结果
mystring="hello"
alert("before="+str+";");
str = str.replace(/\s/g, "");
alert("after="+str+";");