Actionscript :: Javascript: Explain The Meaning Of :Number After A Function Declaration?

Mar 28, 2012

Remark from editor: Op miss-classified actionscript as javascript.I am new to Javascript and am confused by the following function declarations in ECMAScript.js2.

public class String extends Object {
...
public native function charAt(pos:Number):String;

[code].....

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[URL}

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