JS string interception function example

Use substring() or slice()

Function: split()

Function: Use a specified delimiter to split and store a string into an array

example:

Copy the code code as follows:

str=”jpg|bmp|gif|ico|png”;

arr=theString.split(”|”);

//arr is an array containing the character values ​​"jpg", "bmp", "gif", "ico" and "png"

Function: John()

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

example:

Copy the code code as follows:

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(0,6)

Function: indexOf()

Function: Returns the subscript of the first character matching the substring in the string

Copy the code code as follows:

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