"callback hell" meaning in English

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          "ref": "2015, Remo H. Jansen, Learning TypeScript",
          "text": "However, the use of callbacks can lead to a maintainability issue known as callback hell. We will now write a real-life example to showcase what a callback hell is and how easily we can end up dealing with it.",
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        "(mostly of the JavaScript language) The situation where callbacks are nested within other callbacks several levels deep, potentially making it difficult to understand and maintain the code."
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      "raw_glosses": [
        "(programming, colloquial) (mostly of the JavaScript language) The situation where callbacks are nested within other callbacks several levels deep, potentially making it difficult to understand and maintain the code."
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        "(mostly of the JavaScript language) The situation where callbacks are nested within other callbacks several levels deep, potentially making it difficult to understand and maintain the code."
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        "(programming, colloquial) (mostly of the JavaScript language) The situation where callbacks are nested within other callbacks several levels deep, potentially making it difficult to understand and maintain the code."
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