var carJson = [{city:'AAAA'},{city:'BBBB'}]
    
    directive = {
        'car <- carJson':{
            'span.testspan':'car.city',    
            },
        };
<div id="testDiv">
             <span class="testspan" style="color: red;" >Ranafa</span>
    </div>
Can anyone please help with this, its gives following error 
bad loop spec: "span.testspan"
pure.js:84 Uncaught pure error: bad loop spec: "span.testspan"error @ pure.js:84parseloopspec @ pure.js:179loopgen @ pure.js:462loopgen @ pure.js:459compiler @ pure.js:600compile @ pure.js:629(anonymous function) @ view:2450o @ jquery.min.js:2p.fireWith @ jquery.min.js:2e.extend.ready @ jquery.min.js:2c.addEventListener.B @ jquery.min.js:2