javascript - React ternary operator with array.map return -


in react render function, using array.map return jsx code in array , rendering it. doesn't seem work, read few questions here suggested using return statement inside if/else block won't work in case. want check whether round , duration set on each array element , pass in jsx code.could tell me different approach please.

render() {  var interviewprocessmapped = interviewprocess.map((item, index) => {    return     {item.round ?         <div classname="row title">           <div classname="__section--left"><span classname="section-title">round {index + 1}</span></div>           <div classname="__section--right">             <h3>{item.round}</h3>           </div>         </div>         : null     }      {       item.durationhours > 0 || item.durationminutes > 0 ?         <div classname="row">           <div classname="__section--left">duration</div>           <div classname="__section--right border">             {item.durationhours > 0 ? <span>{item.durationhours} hours</span> : null} {item.durationminutes > 0 ? <span>{item.durationminutes} minutes</span> : null}           </div>         </div>         : null     }   });   return <div>{interviewprocessmapped}</div> }

{ not required here: 

return {item.round ?

if use means returning object.

another issue alone return means return; (automatic semicolon insertion) either put condition in same line or use ().

write this:

render() {     let a, b;     var interviewprocessmapped = interviewprocess.map((item, index) => {         = item.round ?                 <div classname="row title">                     ....                 </div>             : null;          b =  (item.durationhours > 0 || item.durationminutes > 0) ?                   <div classname="row">                       ....                   </div>               : null;          if(!a || !b)             return || b;         return [a, b];     });      return (....) }

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