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In this article Xiaobian for you to introduce in detail "what are the common API extension forms of JS", the content is detailed, the steps are clear, and the details are handled properly. I hope that this article "what are the common API extension forms of JS" can help you solve your doubts, the following follows the editor's ideas slowly in depth, together to learn new knowledge bar.

For example, I now have a requirement that, given a string, pass a parameter to the method as a numeric type to determine the number of repeats of the current string, for example:

'abc'.repeatStringNumTimes (3)? / /? abcabcabc

If we follow the general thinking that we bind this method to the prototype of String, the following code:

String.prototype.repeatStringNumTimes?=?String.prototype.repeatStringNumTimes? |? function (times)? {var?str?=?'';for (var?i?=?0;?i?

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