Second-level linkage js script

 

// Second-level interaction Description: the value of the select statement must match the value of allinfo. The array format of all values of the second-level interaction is value | text

 

// Jia Shiyi

 

Www.2cto.com

Function selectChange (obj, changeId, allinfo ){

Var selValue = obj. options [obj. selectedIndex]. value; // obtain the selected value in the select object.

Var objChange = document. getElementById (changeId );

If (objChange ){

ObjChange. options. length = 0;

For (I = 0; I <allinfo. length; I ++ ){

If (allinfo [I]. substring (0, selValue. length) = selValue ){

ObjChange. options. length ++;

Var p = allinfo [I]. indexOf ("| ");

Var text = allinfo [I]. substr (p + 1 );

Var value = allinfo [I]. substr (0, p );

ObjChange. options [objChange. options. length-1] = new Option (text, value );

}

}

}

}