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This article is about how JavaScript uses logical OR for conditions. Xiaobian thinks it is quite practical, so share it with everyone for reference. Let's follow Xiaobian and have a look.

Use logical OR for conditions

I used to declare my variables at the beginning of a function just to avoid getting undefined in case of any unexpected error.

function doSomething(arg1){ arg1arg1 = arg1 ||32; //If the variable is not set, arg1 will take 32 as the default value}JavaScript is what JS is short for JavaScript, it is a literal script language, its interpreter is called JavaScript engine, is part of the browser, mainly used for web development, can add a variety of dynamic effects to the website, make the page more beautiful.

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