Summary of common methods for JavaScript string

String.charat (POS);

The Chartat method returns the character of the POS position in string.

/* * * Returns the character at the parameter position */ var name = "CHENQF"; Name.charat (1);  //

String.Concat (String ...);

Constructs a new string by connecting the string to the argument.

/* * * for connection strings, but not frequently used */ var name = "Chen"; Name.concat (//  Chen_qi_feng

String.IndexOf (searchstring,postion);

Finds a string searchstring, or returns 1 if it finds a position that returns the first matching character.

Optional parameter postion, which you can specify to start a search from a location in string.

var text = "Mississippi"; var // 2  = Text.indexof ("ss", 3);   // 5  = Text.indexof ("ss", 6);   // -1

String.LastIndexOf (searchstring,postion);

Similar to indexOf, except to find it from the end

var text = ' Mississippi '; var // 5  = text.lastindexof (' ss ', 3);   // 2    = text.lastindexof (' ss ', 6);  // 5

After learning regular expressions, go back and record

Summary of common methods for JavaScript string