TextArea containing JSO

HTML

<textarea id='myTextarea' wrap='off' style='width:95%; height:240px font-family:"Lucida Console" font-size:11px;'> [  {
            title: 'RadioButtons Choice',
            sectionName: 'Normal Section',
            type: 'CI.iSheet.ReproduceSheet.properties.choiceField',
            choices: [{choice:' choice 1'},{choice:' choice 2'},{choice:' choice 3'}],
            userSelection: false,
            choiceType: 'CI.iSheet.ReproduceSheet.properties.choiceType.radioButtons',
            mandatory: false
        },
 ];</textarea>
<button id='pressme'>
Press me
</button>
<div id="result">

</div>

JavaScript

$("#pressme").on("click",function(ev) {
 var objStr = $("#myTextarea").val();
 console.log(objStr);
 var obj =eval(objStr);
 console.log(obj);
 $("#result").html(obj[0].mandatory);
 var obj2 = JSON.parse(objStr);
 console.log(obj2)
 

});