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  1. [ References  ](/en-US/docs/Web)
  2. [ JavaScript  ](/en-US/docs/Web/JavaScript)
  3. [ Reference  ](/en-US/docs/Web/JavaScript/Reference)
  4. [ Standard built-in objects  ](/en-US/docs/Web/JavaScript/Reference/Global_Objects)
  5. [ WeakRef  ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakRef)

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##  In this article

  * Description 
  * Constructor 
  * Instance properties 
  * Instance methods 
  * Examples 
  * Specifications 
  * Browser compatibility 
  * See also 

  1. [ Standard built-in objects ](/en-US/docs/Web/JavaScript/Reference/Global_Objects)
  2. _[ ` WeakRef ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakRef) _
  3. Constructor 
    1. [ ` WeakRef() constructor ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakRef/WeakRef)
  4. Methods 
    1. [ ` WeakRef.prototype.deref() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakRef/deref)
  5. Inheritance 
  6. [ ` Function ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function)
  7. Constructor 
    1. [ ` Function() constructor ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/Function)
  8. 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/leng