function Trim(str)
{
while (str.substring(0,1) == ' ') // check for white spaces from beginning
{
str = str.substring(1, str.length);
}
while (str.substring(str.length-1, str.length) == ' ') // check white space from end
{
str = str.substring(0,str.length-1);
}
return str;
}
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