How to search for possible elements with javascript

This article mainly explains "how to use javascript to search for possible elements". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how to search for possible elements with javascript".

Description

1. The matching pattern you want to search may have uncertain parts, and you can use question marks to specify possible elements.

2. This will check the preceding zero or an element. This symbol can be regarded as the preceding element.

Example

The regular expression favRegex needs to be modified to match the word versions of American English (favorite) and British English (favourite). Let favWord = "favorite"; let favRegex = / change/; / / modify this line let result = favRegex.test (favWord); refer to let favWord = "favorite"; let favRegex = / favou?rite/; / / modify this line let result = favRegex.test (favWord) Thank you for your reading, the above is the content of "how to use javascript to search for possible elements". After the study of this article, I believe you have a deeper understanding of how to use javascript to search for possible elements, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!