Angularjs Learning Notes-tool methods

Angular.bind (self, FN, args)

• Function: Returns a new function that binds this function to the self
• Parameters:
  
  • Self: The context object for the new function
  • fn: Functions that need to be bound
  • Args: Arguments passed to a function

• Return value: This new function that points to self

  varobj ={name:' xxx ', Print:function(country) {Console.log ( This. Name + ' is form ' +country); }};varSelf ={name:' YYY '};varBINDFN = Angular.bind (self, obj.print, ' China ');//var bindfn = Angular.bind (self, obj.print, [' China ']);Obj.print (' American ');//$ xxx is form AmericanBINDFN ();//$ yyy is form China

Note: Bind depends on your parameter type to invoke call or apply, so args can be a data or an array.

Angular.copy (source, [destination])

• function: Deep copy of Object
• Parameters:
  
  • Source: Origin Object
  • Destination: Copied objects

• Return value: The copied object

  var obj = {    ' xxx ',    +}; var copyobj =//$ Object {name: "xxx", age:50}

Angular.equals (O1, O2)

• Function: Normal comparison and deep comparison of objects
• Parameters:
  
  • O1: Objects to compare
  • O2: Objects to compare

• Return Value: Boolean

  // $ true // $ true // $ true // $ false

Angular.extend (DST, SRC)

• Role: Expansion of objects
• Parameters:
  
  • DST: An Extended object
  • SRC: Source Object

• Return value: Extended Object

  var dst = {name: ' xxx ', Country: ' China '}; var src = {name: ' yyy ', age:10//$ Object {name: "yyy", age:10}//
       
        $ Object {name: "yyy", Country: "China", age:10}
       

Angular.foreach (obj, iterator, [context])

• Role: Traversal of objects
• Parameters:
  
  • Obj: Object
  • Iterator: Iterative functions
  • Context: Contexts in an iterative function

• return value: obj

  varobj = {name: ' xxx ', Country: ' China '};angular.foreach (obj,function(value, key) {Console.log (key+ ': ' +value);});//$ name:xxx//$ Country:chinavarArray = [' xxx ', ' yyy '];angular.foreach (Array,function(item, index) {console.log (index+ ': ' + item + ' form ' + This. Country);}, obj);//$0:xxx Form China//$1:yyy Form China

Angular.fromjson (String)

• Function: String to JSON object
• Parameters:
  
  • String: Strings

• Return value: JSON object

  var json = Angular.fromjson (' {' name ': ' xxx ', ' age ': ' + '//$ Object {name: ' xxx ', age:34} 

Angular.tojson (Json,pretty)

• Function: JSON object to String
• Parameters:
  
  • Json:json
  • Pretty:boolean number control string output format

• return value: String

   Angular.tojson ({name: ' xxx '  // $ "{" name ":" XXX "}"  angular.tojson ({name:  ' xxx '},true  Span style= "color: #000000;" >); // $ "{ $ " Name ":" XXX " // $}"  angular.tojson ({name:  ' xxx '},10 //            $ "{ $ "Name": "XXX"  // $} " 

   

Angular.identity (value)

• Function: Returns the first argument of this function
• Parameters:
  
  • Value: Parameter

• Return value: First parameter

  // $ xxx

Angular.isarray (value)

• Function: Determine whether a data is an array
• Parameters:
  
  • Value: Data

• Return Value: Boolean

  // $ false // $ true // $ true // $ false

Angular.isdate (value)

• Function: Determine whether a data is a date type
• Parameters:
  
  • Value: Data

• Return Value: Boolean

  // $ falseangular.isdate (new//$ true

angular.isdefined (value)

• Function: Determine whether a data is a defined type
• Parameters:
  
  • Value: Data

• Return Value: Boolean

  // $ false // $ true

angular.isundefined (value)

• Function: Determine whether a data is a undefined type
• Parameters:
  
  • Value: Data

• Return Value: Boolean

  // $ true // $ false

Angular.isfunction (value)

• Function: Determine whether a data is a function
• Parameters:
  
  • Value: Data

• Return Value: Boolean

  Angular.isfunction (function//$ true//$ false

Angular.isnumber (value)

• Function: Determine whether a data is a number type
• Parameters:
  
  • Value: Data

• Return Value: Boolean

  // $ true // $ falseAngular.isnumber (new//$ false//$ true

Angular.isobject (value)

• Function: Determine whether a data is an object
• Parameters:
  
  • Value: Data

• Return Value: Boolean

  // $ false       Angular.isobject (null//$ false//$ trueangular.isobject ( function // $ false // $ true

Angular.isstring (value)

• Function: Determine whether a data is a string
• Parameters:
  
  • Value: Data

• Return Value: Boolean

  // $ false // $ trueangular.isstring (new//$ false//$ true

Angular.lowercase (String)

• Function: Lowercase the string uppercase
• Parameters:
  
  • String: Strings

• Return value: The new string after the change

  var newstring = angular.lowercase (' xxyyzz '//$ xxyyzz

Angular.uppercase (String)

• function: capitalizes the lowercase letter of a string
• Parameters:
  
  • String: Strings

• Return value: The new string after the change

  var newstring = angular.uppercase (' xxyyzz '//$ xxyyzz

Angular.noop ()

• Function: null function

  var false ;    ? Console.log (' xxx '): Angular.noop ();

Angularjs Learning Notes-tool methods