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JavaScript Tutorial/Function/Function Object - История изменений
2026-04-04T06:10:56Z
История изменений этой страницы в вики
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Admin: 1 версия
2010-05-26T08:24:46Z
<p>1 версия</p>
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<td colspan="1" style="background-color: white; color:black; text-align: center;">Версия 08:24, 26 мая 2010</td>
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Admin
http://wbex.ru/index.php?title=JavaScript_Tutorial/Function/Function_Object&diff=9074&oldid=prev
в 18:52, 25 мая 2010
2010-05-25T18:52:56Z
<p></p>
<p><b>Новая страница</b></p><div>== Function.apply()==<br />
<br />
<p>Syntax</p><br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="javascript"><br />
function.apply()</source><br />
<br />
<br />
<br />
== Function.arguments==<br />
<br />
<p>Syntax</p><br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="javascript"><br />
function.arguments</source><br />
<br />
<br />
<br />
== Function.arity==<br />
<br />
<p>The arity property represents the number of declared arguments a function expects to receive.</p><br />
<p>The arity property is valid when the language attribute of the script tag is set to JavaScript1.2.</p><br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="javascript"><br />
<html><br />
<body><br />
<script lanuguage="JavaScript1.2"><br />
<!--<br />
function subtract(first, second){<br />
var result = first - second;<br />
return result;<br />
}<br />
document.write("arity = " + subtract.arity + "<br>")<br />
document.write("The result of the subtract function is: " + subtract(4,3));<br />
--><br />
</script><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Function.call()==<br />
<br />
<p>Syntax</p><br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="javascript"><br />
function.call(this)<br />
function.call(this, arg1, arg2, ..., argN)</source><br />
<br />
<br />
<br />
== Function.caller==<br />
<br />
<p>The caller property is used to reference the function that called the currently executing function.</p><br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="javascript"><br />
<html><br />
<body><br />
<script lanuguage="JavaScript1.1"><br />
<!--<br />
function functionB(){<br />
var Boss = true;<br />
functionA();<br />
}<br />
function functionA(){<br />
myBoss = functionA.caller.name;<br />
document.write(myBoss + "<br>");<br />
}<br />
functionB();<br />
--><br />
</script><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Function() (capital F)==<br />
<br />
<p>Syntax</p><br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="javascript"><br />
var variable = new Function()<br />
var variable = new Function(int)<br />
var variable = new Function(arg1, ..., argN)</source><br />
<br />
<br />
<p>Function() is a constructor that creates a Function object.</p><br />
<p>Properties and Methods of the Function Object</p><br />
Property/Method<br />
Description<br />
apply()<br />
Applies method to multiple objects<br />
arguments<br />
Array reflecting function arguments<br />
arity<br />
Number of arguments expected by function<br />
call()<br />
Allows calling of methods belonging to other functions<br />
caller<br />
Reference to function caller<br />
prototype<br />
Prototype for a class of objects<br />
toSource()<br />
Created copy of function object<br />
toString()<br />
Converts function back to string which defines it<br />
<br />
== Function.prototype==<br />
<br />
<p>Syntax</p><br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="javascript"><br />
function.prototype.property<br />
function.prototype.method</source><br />
<br />
<br />
<br />
== Function.toSource()==<br />
<br />
<p>The toSource() method can create a copy of an object.</p><br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="javascript"><br />
<html><br />
<body><br />
<script lanuguage="JavaScript"><br />
<!--<br />
var aString = new String("This is the source");<br />
bString = aString.toSource();<br />
document.write(bString);<br />
--><br />
</script><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Function.toString()==<br />
<br />
<p>The toString() method is used to convert a function to string.</p><br />
<p>The method converts the function back to the JavaScript source.</p><br />
<p>The converted string includes all aspects of the defined function.</p><br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="javascript"><br />
<html><br />
<body><br />
<script lanuguage="JavaScript"><br />
<!--<br />
function writeText(){<br />
document.write("Some dummy text");<br />
}<br />
var func = writeText.toString();<br />
document.write("The string representation of the writeText");<br />
document.write(" function looks like: " + "<br><br><b>");<br />
document.write(func + "</b>");<br />
--><br />
</script><br />
</body><br />
</html></source></div>