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► KB ► To/From Guides ► C#

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Left of String (C# and JavaScript Cross Reference Guide)

By Mike Prestwood

C# versus JavaScript: A side by side comparison between C# and JavaScript.

Commands

Common commands (procedures and functions). A function returns a value. Optionally, it may also perform an action prior to returning a value. A procedure does not return a value or it returns void or null.

Left of String

[Other Languages]

C#: Substring

Above returns "abcd" on a string literal. You can, of course, use VarName.Substring(0, 4).

Syntax Example:

Console.WriteLine("abcdefgh".Substring(0, 4));

JavaScript: substr

Above returns "Mike P".

SubStr(StartIndex, NumberOfCharacters)

Notice JavaScript is 0 based (the first character is character 0).�0 is start character, 6 is number�of characters).�

You can also use substring where both numbers are indexes:

SubString(StartIndex, EndIndex)

The following returns "re".

var sName;
sName = "Mike Prestwood";
sName = sName.substring(6, 8);
document.write(sName);

Syntax Example:

var sName;
sName = "Mike Prestwood";
sName = sName.substr(0, 6);
document.write("Hello " + sName);