How JavaScript uses the isPlainObject function

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isPlainObject: Determine whether the data is of Object type

function isPlainObject(obj) { return Object.prototype.toString.call (obj) === '[object Object]'} Features of JavaScript 1. JavaScript is mainly used to add interactive behavior to HTML pages. JavaScript can be embedded directly into HTML pages, but writing a separate js file facilitates the separation of structure and behavior. JavaScript has cross-platform characteristics, and with the support of most browsers, it can run on multiple platforms.

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