Example Analysis of function default value in ES5 version 01/18 Update SLTechnology News&Howtos

Example Analysis of function default value in ES5 version

2025-01-18 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >

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This article mainly introduces the ES5 version of the function default value of the example analysis, the article is very detailed, has a certain reference value, interested friends must read it!

It is common to use a short circuit or operator to set the default value of a function. However, there are some pits. In the code shown below, when the default parameter is a number, the default value will still be used when the parameter is 0. It must be judged separately when y is 0.

Const pow = (x, y) = > {y = y | | 2; let result = 1; for (let I = 0, max = y; I

< max; i++) { result *= x; } return result;}console.log(pow(2)); // =>

4console.log (pow (2,3)); / / > 8max / when the value of y is 0, the value of y is 2console.log (pow (2,0)); / / = > 4 is all the contents of the article "sample Analysis of function default values in ES5 version". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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