RE: Client Side Programming - Javascript - eval()

this.$setValue( eval ( ''+value+'') ) ;

  <attribute w:name="setValue">
            function (value) {
                  this.$setValue(value); //call the original method
                  if (this.desktop) {
                        this._flag = !this._flag;
                        this.setStyle('background:'+(this._flag ? 'red':'green'));
                        val value;
                        try{
                           value  =  eval ( ''+value+'')
                        }catch(e){}


                        this.$setValue(value) ;
                   }
            }
            </attribute>

<window id="win" border="normal" width="600px" xmlns:w="http://www.zkoss.org/2005/zk/client">
<textbox id="textToEval" value ="1+2"  onChanging="resultLabel.value=event.value"/>
<label value=" Hello ZKalkulator! Just try to edit expression in the text field to get result..." id="resultLabel">
            <attribute w:name="setValue">
            function (value) {
                  this.$setValue(value); //call the original method
                  if (this.desktop) {
                        this._flag = !this._flag;
                        this.setStyle('background:'+(this._flag ? 'red':'green'));
                        var value;

                        try{
                           value  =  eval ( ''+value+'');
                        }catch(e){}


                        this.$setValue(value) ;
                   }
            }
            </attribute>
</label>
</window>