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var isExist=false;
var ArrayddlPercentage = ddlPercentage.value.split(",");
for(var i = 0 ;i < ArrayddlPercentage.length; i++)
{
if(ArrayddlPercentage[i].toString() == ddl.id.toString())
{
isExist=true;
}
}
if(!isExist)
{
ddlPercentage.value += ddl.id + ",";
//ddlPercentage.value += ","+ ddl.id ;
// 你自己看看应该用哪个
}
for(var i = 0 ;i < ArrayddlPercentage.length; i++)