{"componentChunkName":"component---src-templates-date-template-date-template-js","path":"/date/2020-07-27","result":{"data":{"allMarkdownRemark":{"totalCount":1,"edges":[{"node":{"fields":{"slug":"how-to-check-if-a-key-exists-in-a-javascript-object","dateSlug":"2020-07-27","postID":"how-to-check-if-a-key-exists-in-a-javascript-object-2020-07-27"},"frontmatter":{"category":"objects","tags":["javascript","es6","objects"],"date":"July 27, 2020","format":"image","title":"How to check if a key exists in a JavaScript object","image":{"childImageSharp":{"fluid":{"base64":"data:image/jpeg;base64,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","aspectRatio":1.5,"src":"/static/be279c7c72812cf79c0d5da3613c120f/3866d/how-to-check-if-a-key-exists-in-a-javascript-object.jpg","srcSet":"/static/be279c7c72812cf79c0d5da3613c120f/d1bff/how-to-check-if-a-key-exists-in-a-javascript-object.jpg 6w,\n/static/be279c7c72812cf79c0d5da3613c120f/3866d/how-to-check-if-a-key-exists-in-a-javascript-object.jpg 510w,\n/static/be279c7c72812cf79c0d5da3613c120f/f7bf2/how-to-check-if-a-key-exists-in-a-javascript-object.jpg 1920w","srcWebp":"/static/be279c7c72812cf79c0d5da3613c120f/47cfc/how-to-check-if-a-key-exists-in-a-javascript-object.webp","srcSetWebp":"/static/be279c7c72812cf79c0d5da3613c120f/ab631/how-to-check-if-a-key-exists-in-a-javascript-object.webp 6w,\n/static/be279c7c72812cf79c0d5da3613c120f/47cfc/how-to-check-if-a-key-exists-in-a-javascript-object.webp 510w,\n/static/be279c7c72812cf79c0d5da3613c120f/2532a/how-to-check-if-a-key-exists-in-a-javascript-object.webp 1920w","sizes":"(max-width: 510px) 100vw, 510px","presentationWidth":510,"presentationHeight":350}}}},"excerpt":"When working with objects, we may need to check if a certain key exists or has a certain value. Let’s say we have a dog object: And we want to validate whether or n…"}}]}},"pageContext":{"date":"July 27, 2020","dateSlug":"2020-07-27"}},"staticQueryHashes":["1112540427","1408454471","2347443422","2404490943","2661970575","3904292974","399170485","648301173","850277546"]}