JS string interception function example_javascript skills

Use substring() or slice()

Function: split()
Function: Use a specified delimiter to split a string and store it in an array
Example:

Copy the code The code is 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 the delimiter of your choice
Example:

Copy code The code is 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: character String interception, for example, if you want to get "Minidx" from "MinidxSearchEngine", you need to use substring(0,6)

Function: indexOf()
Function: Return the subscript of the first character matching the substring in the string

Copy codeThe code is 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