function Jtrim(str) //去空隔函数
{
var i = 0;
var len = str.length;
if ( str == "" ) return( str );
j = len -1;
flagbegin = true;
flagend = true;
while ( flagbegin == true && i< len)
{
if ( str.charAt(i) == " " )
{
i=i+1;
flagbegin=true;
}
else
{
flagbegin=fal
{
var i = 0;
var len = str.length;
if ( str == "" ) return( str );
j = len -1;
flagbegin = true;
flagend = true;
while ( flagbegin == true && i< len)
{
if ( str.charAt(i) == " " )
{
i=i+1;
flagbegin=true;
}
else
{
flagbegin=fal
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