[Flash Development Notes] ComboBox, two functions of the List component

The following two functions are suitable for ComboBox and list components.

Checkcmbitemexists:Check whether a specified item already exists. Sometimes, you need to dynamically add items to the list or ComboBox component, but before adding the items, you must check whether the items already exist in advance to avoid repeated addition.

Selectcmbitem:Select an item. Sometimes you need to use a program to select an item in the list or ComboBox component.

// Check whether an item already exists.
Function checkcmbitemexists (_ CMB, _ DATA ){
VaR L = _ CMB. length;
For (var j = 0; j <L; j ++ ){
If (_ CMB. getitemat (j). Data = _ DATA ){
Return true;
}
}
Return false;
}
// Select an item.
Function selectcmbitem (_ CMB, _ DATA ){
VaR L = _ CMB. length;
VaR Index = 0;
For (var j = 0; j <L; j ++ ){
If (_ CMB. getitemat (j). Data = _ DATA ){
Index = J;
Break;
}
}
_ CMB. selectedindex = index;
}