Address Bar parameter acquisition function getquerystr (name)

// Name: parameter name. Return: If yes, the corresponding value of this parameter is returned. If no value is returned, the return value is null.
Function getquerystr (name)
{
VaR Reg = new Regexp ("(^ | &)" + name + "= ([^ &] *) (& | $ )");
VaR r = Window. Location. Search. substr (1). Match (REG );
If (R! = NULL) return Unescape (R [2]); return NULL;
}

// Real parameter: Parameter Name, returns the value of this parameter
Function getquerystr (name)
{
VaR Reg = new Regexp ("(^ | &)" + name + "= ([^ &] *) (& | $ )");
VaR r = Window. Location. Search. substr (1). Match (REG );
If (R! = NULL) return Unescape (R [2]); return NULL;
}