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  1. [ References  ](/en-US/docs/Web)
  2. [ JavaScript  ](/en-US/docs/Web/JavaScript)
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  6. [ Function: length  ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/length)

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##  In this article

  * Try it 
  * Value 
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  * Browser compatibility 
  * See also 

  1. [ Standard built-in objects ](/en-US/docs/Web/JavaScript/Reference/Global_Objects)
  2. [ ` Function ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function)
  3. Constructor 
    1. [ ` Function() constructor ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/Function)
  4. Properties 
    1. [ ` Function.prototype.arguments ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/arguments) Non-standard  Deprecated 
    2. [ ` Function.prototype.caller ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/caller) Non-standard  Deprecated 
    3. [ ` Function: displayName ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/displayName) Non-standard 
    4. _[ ` Function: length ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/length) _
    5. [ ` Function: name ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name)
    6. [ ` Function: prototype ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/prototype)
  5. Methods 
    1. [ ` Function.prototype[@@hasInstance]()