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polyfill in javascript

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YOU.com answered on June 15, 2021 Popularity 9/10 Helpfulness 1/10

answer polyfill in javascript

related what is polyfill.min.js?

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polyfill in javascript

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if (!Array.prototype.includes) {
  Array.prototype.includes = function(element) {
    for (var i = 0; i < this.length; i++) {
      if (this[i] === element) {
        return true;
      }
    }
    return false;
  };
}

Popularity 9/10 Helpfulness 1/10 Language javascript

Source: Grepper

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Contributed on Sep 12 2023

YOU.com

0 Answers Avg Quality 2/10

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what is polyfill.min.js?

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Polyfill
A polyfill is a piece of code (usually JavaScript on the Web) used to provide modern functionality on older browsers that do not natively support it.

For example, a polyfill could be used to mimic the functionality of a text-shadow in IE7 using proprietary IE filters, or mimic rem units or media queries by using JavaScript to dynamically adjust the styling as appropriate, or whatever else you require.

The reason why polyfills are not used exclusively is for better functionality and better performance. Native implementations of APIs can do more and are faster than polyfills. For example, the Object.create polyfill only contains the functionalities that are possible in a non-native implementation of Object.create.

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Jun 15 2021

Xanthous Xenomorph

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polyfill javascript

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-1

Polyfill: 
A polyfill is a piece of code (usually JavaScript on the Web) used to provide 
modern functionality on older browsers that do not natively support it.

// simple example
const arr = [1, 2, 3, 4, 5];
// Simulate browser incompatibility
Array.prototype.forEach = null;
if (!Array.prototype.forEach) {
  // polyfill ..
  Array.prototype.forEach = function (callbackFunction) {
    for (let i = 0; i < this.length; i++) {
      callbackFunction(this[i]);
    }
  };
}
arr.forEach((val) => {
  console.log(val);
});

Popularity 9/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Jun 24 2023

Abhishek

0 Answers Avg Quality 2/10

polyfill in javascript

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