exists
[ Function ]
public static exists(
propertyName: string,
control: TcHmi.Controls.System.baseTcHmiControl
): boolean;
Determines whether a binding exists between a symbol and a control attribute.
Parameter
Name | Type | Description |
---|---|---|
propertyName | Name of the attribute | |
control | Reference to the control instance |
Return value
Type | Description |
---|---|
Returns true if the attribute is linked to a symbol. |
![]() | Available from version 1.10 |
Sample - JavaScript
var myControl = TcHmi.Controls.get('TcHmiTextbox_1');
if(myControl){
var result = TcHmi.Binding.exists('Text',myControl);
if(result){
// Binding exists
} else {
// Binding exists not
}
}