--- title: How to fix `Unexpected end of input` | daily.dev description: The SyntaxError 'Unexpected end of input' occurs when JavaScript reaches the end of code or data while expecting more. Common causes include missing closing... canonical: https://daily.dev/posts/fr4cuz3sr twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How to fix `Unexpected end of input` | daily.dev og:description: The SyntaxError 'Unexpected end of input' occurs when JavaScript reaches the end of code or data while expecting more. Common causes include missing closing... og:url: https://daily.dev/posts/fr4cuz3sr og:image: https://api.daily.dev/og/posts/Fr4cuz3SR.png og:image:alt: Post cover image og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How to fix `Unexpected end of input` **[JS Development](https://daily.dev/sources/jsdevelopment)** · [@toddhgardner](https://daily.dev/toddhgardner) · 3 upvotes · 0 comments ## Summary The SyntaxError 'Unexpected end of input' occurs when JavaScript reaches the end of code or data while expecting more. Common causes include missing closing brackets in code, empty API responses, servers returning HTML instead of JSON, and truncated network responses. Fix syntax errors by matching all brackets and quotes. For JSON parsing, validate responses before parsing, check content types, handle empty responses gracefully, and wrap JSON.parse in try/catch blocks. Production monitoring helps identify intermittent server issues causing these errors. ## Full article daily.dev links to this article rather than hosting it. 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