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This article mainly introduces "what are the commonly used JavaScript string processing functions". In daily operation, I believe that many people have doubts about the commonly used JavaScript string processing functions. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the questions of "what are the commonly used JavaScript string processing functions?" Next, please follow the editor to study!

Function: split ()

Function: use a specified delimiter to split a string into an array

Example:

Str= "jpg | bmp | gif | ico | png"

Arr=theString.split ("|")

/ / arr is an array of character values "jpg", "bmp", "gif", "ico" and "png"

Function: John ()

Function: merge an array into a string using the delimiter of your choice

Example:

Var delimitedString=myArray.join (delimiter)

Var myList=new Array ("jpg", "bmp", "gif", "ico", "png")

Var portableList=myList.join ("|")

/ / the result is jpg | bmp | gif | ico | png

Function: substring ()

Function: string interception. For example, if you want to get "Minidx" from "MinidxSearchEngine", you need to use substring (0mem6).

Function: indexOf ()

Function: returns the subscript of the first character in the string that matches the substring

Var myString= "JavaScript"

Var w=myString.indexOf ("v"); w will be 2

Var x=myString.indexOf ("S"); x will be 4

Var y=myString.indexOf ("Script"); y will also be 4

Var z=myString.indexOf ("key"); z will be-1

At this point, the study of "what are the commonly used JavaScript string processing functions" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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