The string processing function in JS split, join, SUBSTRING and indexof detailed

Function: Split ()

Function: To store a string partition into an array using a specified delimiter

Example:

The code is as follows	Copy Code
Str= "Jpg|bmp|gif|ico|png"; Arr=thestring.split ("|"); Arr is an array that contains the character values "JPG", "BMP", "GIF", "ico", and "PNG"

Function: John ()

Function: Merges an array into a string using the separator of your choice

The code is as follows	Copy Code
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. Example <script type= "Text/javascript" > var arr = new Array (3) Arr[0] = "George" ARR[1] = "John" ARR[2] = "Thomas" document.write (Arr.join (".")) </script> Output: George.John.Thomas

Function: substring ()

Function: string interception, for example, to get "Minidx" from "minidxsearchengine" to use SUBSTRING (0,6)

Example:

The code is as follows

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var str = "0123456789"; Alert (str.substring (0)),------------"0123456789" Alert (str.substring (5)),------------"56789" Alert ( str.substring)-----------"" Alert (str.substring),-----------"" Alert (str.substring ( -5));------- ----"0123456789" Alert (str.substring ( -10)),----------"0123456789" Alert (str.substring ( -12)),----------" 0123456789 Alert (str.substring (0,5)),----------"01234" Alert (str.substring (0,10)),---------"0123456789" Alert (str.substring (0,12)),---------"0123456789" Alert (str.substring (2,0)),----------"a" alert ( Str.substring (2,2)),----------"" Alert (str.substring (2,5)),----------"234" Alert (str.substring); -------"23456789" Alert (2,-2),---------"str.substring" Alert (str.substring ( -1,5)),---------"01234" Alert (str.substring ( -1,-5));--------"" Alert (STR.SUBSTR (0));---------------"0123456789" Alert (STR.SUBSTR (5));---------------"56789" alert (STR.SUBSTR);--------------"" alert (STR.SUBSTR);--------------"" Alert (STR.SUBSTR ( -5));--------------"56789" Alert (STR.SUBSTR ( -10));-------------"0123456789" Alert (STR.SUBSTR ( -12));-------------"0123456789" Alert (STR.SUBSTR (0,5));-------------"01234" Alert (STR.SUBSTR (0,10));------------"0123456789" Alert (STR.SUBSTR (0,12));------------"0123456789" Alert (STR.SUBSTR (2,0));-------------"" Alert (STR.SUBSTR (2,2));-------------"23" Alert (STR.SUBSTR (2,5));-------------"23456" Alert (STR.SUBSTR (2,12));------------"23456789" Alert (STR.SUBSTR (2,-2));------------"" Alert (STR.SUBSTR ( -1,5));------------"9" Alert (STR.SUBSTR ( -1,-5));-----------""

Function: IndexOf ()

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

code is as follows	copy code
var Mystring= "JavaScript"; var w=mystring.indexof ("V"); W'll be 2 var x=mystring.indexof ("S"); x'll be is 4 var y=mystring.indexof ("Scrip T "); y'll also be 4 var z=mystring.indexof (" key "); Z'll be-1