Declares a block-scoped variable.
Use the let statement to declare a variable, the scope of which is restricted to the block in which it is declared. You can assign values to the variables when you declare them or later in your script.
A variable declared using let cannot be used before its declaration or an error will result.
The following example illustrates the use of the let statement.
Supported in the Internet Explorer 11 standards document mode. Also supported in Windows Store apps (Windows 8.1). See Version Information. Not supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards.