ArticleZip > Ie Does Not Support Array Includes Or String Includes Methods

Ie Does Not Support Array Includes Or String Includes Methods

If you're a developer who works with JavaScript, you may have hit a roadblock when trying to use the Array.includes() or String.includes() methods in your code while supporting IE (Internet Explorer). Unfortunately, Internet Explorer does not support these handy methods, but fear not! There are simple workarounds that you can implement to achieve the same functionality across all browsers.

To start off, let's tackle the Array.includes() method. This method is used to check if an array includes a certain element, returning true or false based on the presence of the element. Since IE does not support this method, you can create a custom function to achieve the desired behavior.

Here's an example of how you can replicate the Array.includes() functionality in a way that works across all browsers, including IE:

Javascript

if (!Array.prototype.includes) {
  Array.prototype.includes = function(searchElement) {
    return this.indexOf(searchElement) !== -1;
  };
}

By adding this snippet of code to your project, you can now use the includes() method on arrays without worrying about compatibility issues with Internet Explorer.

Moving on to the String.includes() method, which is used to check if a string contains a specific substring. Similarly to the Array.includes() scenario, Internet Explorer lacks support for this method. But fret not, you can create a simple workaround to accomplish the same task universally.

Here's how you can mimic the String.includes() functionality to make it compatible with Internet Explorer and other browsers:

Javascript

if (!String.prototype.includes) {
  String.prototype.includes = function(searchString) {
    return this.indexOf(searchString) !== -1;
  };
}

By incorporating this code snippet into your project, you can now use the includes() method on strings seamlessly, even in Internet Explorer.

In conclusion, while IE may not support the Array.includes() and String.includes() methods out of the box, you can easily overcome this hurdle by creating custom polyfills like the ones provided above. These solutions ensure that your code remains consistent and functions as intended across different browsers, maintaining a smooth user experience without compromising on crucial functionality.

So, the next time you encounter compatibility issues with IE and methods like Array.includes() or String.includes(), just remember these easy workarounds and keep coding confidently! Happy coding! 🚀

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