{ "componentChunkName": "component---src-templates-blog-post-js", "path": "/what-is-garbage-collection-in-javascript/", "result": {"data":{"markdownRemark":{"html":"

Let’s talk about memory management in JavaScript.

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Regardless of the programming language, the memory life cycle can be understood in 3 steps:

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Allocating memory

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JavaScript automatically allocates memory when values are declared initially.

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Example:

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// allocates memory for a number\nlet num = 2604;\n\n// allocates memory for a string\n let str = “hemanta”
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Using memory

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We use memory when we read and write in allocated memory. This can be done, for example, by reading and writing the value of a variable or an object property or even passing an argument to a function.

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Releasing memory

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At this stage, JavaScript utilizes a form of automatic memory management known as garbage collection. The purpose of a garbage collector is to monitor memory allocation and determine when a block of allocated memory is no longer needed and reclaim it.

\n","frontmatter":{"title":"What is Garbage Collection in JavaScript?","date":"2021-07-16"}}},"pageContext":{"slug":"/what-is-garbage-collection-in-javascript/","prev":{"fields":{"slug":"/how-to-capitalize-the-first-letter-of-each-word-in-a-sentence-in-javascript/"},"frontmatter":{"modules":null}},"next":{"fields":{"slug":"/array-chunking-in-javascript-using-while-loop-and-slice-method/"},"frontmatter":{"modules":null}}}}, "staticQueryHashes": ["3159585216"]}