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This article mainly shows you "js how to achieve character cutting", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "js how to achieve character cutting" this article.

Cutting method

Console.log (str.slice (3d7)); / / beginning, ending (beginning, ending) console.log (str.substring (3Power7)); / / beginning, ending (having beginning, ending (having beginning, ending) console.log (str.substr (3Power7)); / / beginning, length (with beginning, no end, with length) console.log (str.slice (- 3djue 2)) / / the first negative value is added to the length, the second negative value is added to the length console.log (str.substring); / / the first negative value is converted to 0, the second negative value is converted to 0, and if the beginning is greater than the end, the console.log is switched (str.substr (- 3jour 1)); / / the first negative value is added to the length, and the second negative value is converted to 0

Let's look at an example:

Var type can be dir/file

If (type! = = 'dir' & & name.indexOf ('.')! =-1) {/ / file basename=name.substr (0MagneName.lastIndexOf ('.')); extension=name.substr (name.lastIndexOf ('.));} else {/ / dir basename=name; extension=false;} / / above is all the content of the article "how to achieve character cutting in js" in Chinese. Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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