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How does JavaScript verify that characters start with a letter

2025-04-04 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >

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This article will explain in detail how JavaScript checks whether characters begin with letters. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

Check whether the character begins with a letter

Verification rules:

Must start with a letter

The first letter is not case-sensitive.

Function letterBegin (str) {

Return / ^ [Amurz] / .test (str)

} what is JavaScript? JavaScript is a literal scripting language whose interpreter is called JavaScript engine and is part of the browser. JavaScript is a scripting language widely used on the client side. It was first used on HTML pages to add dynamic functions to HTML pages.

This is the end of the article on "how to check whether a character begins with a letter in JavaScript". I hope the above content can be helpful to you so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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