How javascript searches for possible elements

This article mainly introduces javascript how to search for possible elements of the relevant knowledge, the content is detailed and easy to understand, the operation is simple and fast, with a certain reference value, I believe that everyone after reading this javascript how to search for possible elements of the article will have a harvest, let's take a look.

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); this is the end of the article on "how javascript searches for possible elements". Thank you for reading! I believe you all have a certain understanding of the knowledge of "how to search for possible elements in javascript". If you want to learn more, you are welcome to follow the industry information channel.