| function checkChar(str)
{
//function to check the character exists or not in string
var constraints='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz, ';
var constraints_length=constraints.length;
var str_length=str.length;
for(var counter=0;counter<.str_length;counter++)
{
var flag=false;
var targetchar=str.charAt(counter);
for(var pointer=0;pointer<.constraints_length;pointer++)
{
if(targetchar==constraints.charAt(pointer))
{
flag=true;
break;
}
}
if(flag==false)
{
return false;
}
}
return true;
} | | |