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Xiaobian to share with you how to use the test() method in javascript, I believe most people still do not know how to use it, so share this article for your reference, I hope you have a lot of harvest after reading this article, let's go to understand it together!

test()

var str = "123";var reg = RegExp(/3/);console.log(reg.test(str)); // true

The test() method retrieves the value specified in a string. Returns true or false.

JavaScript is a literal scripting language, its interpreter is called JavaScript engine, is part of the browser, JavaScript is widely used in client-side scripting language, first used in HTML pages, used to add dynamic features to HTML pages.

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