How do I check if a variable exists?

• 0
  What is the shortest way to do so that it does not give an error if objects do not have a certain property, for example $ {e.breeds [0] .name}
  

  function createPics() {
  		getCats();
  		let containerCats = '';
  
  		newCats.forEach(e=>{
  			let htmlCats = `
  			<div class="cat__item">
  				<div class="cat__img"><img src="${e.url}" alt="${e.breeds[0].name}"></div>
  				<div class="cat__name">${e.breeds[0].name}</div>
  				<div class="cat__temperament">${e.breeds[0].temperament}</div>
  				<div class="cat__live">${e.breeds[0].life_span}</div>
  				<div class="cat__origin">${e.breeds[0].origin}</div>
  				<div class="cat__description">${e.breeds[0].description}</div>
  				<div class="cat__wikipedia_url">${e.breeds[0].wikipedia_url}</div>
  			</div>
  			`;
  			containerCats +=htmlCats;
  
  		})
  		generalDiv.innerHTML = containerCats;
  	}

  JavaScript Ronan Horton, Sep 9, 2019

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2 Answers
• 0
  optional chaining

  Anonymous

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• 0
  https://developer.mozilla.org/en/docs / Web / JavaScri ...

  Anonymous

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