RE: Client Side Programming - Javascript - eval()

asked 2010-08-24 14:29:25 +0800

vpupkin
30 ● 1

After compilation this Doc-Page my HelloZK looks like:

<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.$setValue(value); //call the original method
                  if (this.desktop) {
                        this._flag = !this._flag;
                        this.setStyle('background:'+(this._flag ? 'red':'green'));
                        this.$setValue( eval ( ''+value+'') ) ;
                   }
            }
            </attribute>
</label>
</window>

So, its works (WONDERFULL even on ONLINE_DEMO!) as good as should...
.. till expr-eval-error. How can i process wrong expression-evaluation otherwise?

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