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JavaScript Express Basics Parameters, Query Strings, and Modularizing Routes Linking Around the Application

Posted by Trevor Maltbie
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Trevor Maltbie
Full Stack JavaScript Techdegree Graduate 17,021 Points

A solution to handle invalid query string key 'side' value

if ( !side || ( side !== 'answer' && side !== 'question')) {
    res.redirect(`/cards/${id}?side=question`)
  }

2 Answers

Jelena Feliciano
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Jelena Feliciano
Full Stack JavaScript Techdegree Student 12,729 Points

This definitely works but it also seems like the !side and the parentheses wrapped around the side !== 'answer' && side !== 'question' are no longer needed and it looks much easier to read. 

if (  side !== 'answer' && side !== 'question' ) {
    res.redirect(`/cards/${id}?side=question`)
  }

This was really helpful.

Tron Nguyen
Tron Nguyen
10,847 Points
Tron Nguyen
Tron Nguyen
10,847 Points 
  if(side === 'question'){
    templateData.hint = hint;
    templateData.sideToShow = 'answer';
    templateData.sideToShowDisplay = 'Answer';
  }else if(side === 'answer'){
    templateData.sideToShow = 'question';
    templateData.sideToShowDisplay = 'Question';
  }else{
    return res.redirect(`/cards/${id}?side=question`);
  }