[JavaScript This的应用] #javascript #EMACScript

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[JavaScript This的应用] #javascript #EMACScript

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Last edited Jul 11, 2018

Created on Jul 11, 2018

This example demonstrates a JavaScript technique for overriding the native `document.getElementById` method to control how DOM elements are accessed. It shows the result of calling the modified function to retrieve a `div` element with the ID `div1` and logging its `id` property to the console. The code wraps the original method using `Function.prototype.apply` to preserve the `document` context, then assigns the wrapper to a variable and invokes it. The implementation relies solely on vanilla JavaScript DOM APIs, with no external libraries.

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