Angular JS break ForEach

Question

I have an angular foreach loop and i want to break from loop if i match a value  The following code does not work   angular forEach  0 1 2   function count     if count    1       break            How can i get this

User · Answer

Just add  index and do the following   angular forEach  0 1 2   function count   index         if  index     1                 do stuff

User · Answer

As the other answers state  Angular doesn t provide this functionality  jQuery does however  and if you have loaded jQuery as well as Angular  you can use    jQuery each   array  function   index  value        if condition  return false     this will cause a break in the iteration      See http   api jquery com jquery each

User · Answer

You can use this   var count   0  var arr    0 1 2   for var i in arr      if count    1  break       console log arr i

User · Answer

As far as I know  Angular doesn t provide such a function  You may want to use underscore s find   function for this  it s basically a forEach which breaks out of the loop once the function returns true    http   underscorejs org  find

User · Answer

please use some or every instances of ForEach    Array prototype some  some is much the same as forEach but it break when the callback returns true  Array prototype every  every is almost identical to some except it s expecting false to break the loop    Example for some   var ary     JavaScript    Java    CoffeeScript    TypeScript     ary some function  value  index   ary        console log index          value       return value      JavaScript         Example for every   var ary     JavaScript    Java    CoffeeScript    TypeScript     ary every function value  index   ary        console log index          value       return value indexOf  Script    gt  -1        Find more information  http   www jsnoob com 2013 11 26 how-to-break-the-foreach

User · Answer

I would use return instead of break   angular forEach  0 1 2   function count     if count    1       return            Works like a charm

User · Answer

This example works  Try it   var array    0 1 2   for  var i   0  ii   array length  i  lt  ii  i       if i     1      break

User · Answer

Use the Array Some Method   var exists    0 1 2  some function count         return count    1        exists will return true  and you can use this as a variable in your function  if exists       console log  this is true        Array Some Method - Javascript

User · Answer

Try this as break    angular forEach  0 1 2   function count     if count    1       return true

User · Answer

Concretely  you can exit of a forEach loop  and of any place  throw an exception   try      angular forEach  1 2 3   function num          if  num     2  throw Error             catch e           anything     However  it is better if you use other library or implement your own function  a find function in this case  so your code is most high-level

User · Answer

If you use jQuery  hence not jqLite  in conjunction with AngularJS you can iterate with   each - which allows breaking and continuing based on boolean return value expression   JSFiddle   http   jsfiddle net JEcD2 1   Javascript   var array     foo    bar    yay      each array  function index  element       if  element      foo             return true     continue           console log this       if  element      bar             return false     break             Note   Though using jQuery is not bad  both native Array some or Array every functions are recommended by MDN as you can read at native forEach documentation       There is no way to stop or break a forEach loop  The solution is to use Array every or Array some    Following examples are provided by MDN   Array some   function isBigEnough element  index  array       return  element  gt   10     var passed    2  5  8  1  4  some isBigEnough      passed is false passed    12  5  8  1  4  some isBigEnough      passed is true   Array every   function isBigEnough element  index  array       return  element  gt   10     var passed    12  5  8  130  44  every isBigEnough      passed is false passed    12  54  18  130  44  every isBigEnough      passed is true

User · Answer

The angular forEach loop can t break on a condition match   My personal advice is to use a NATIVE FOR loop instead of angular forEach   The NATIVE FOR loop is around 90  faster then other for loops     USE FOR loop IN ANGULAR   var numbers    0  1  2  3  4  5    for  var i   0  len   numbers length  i  lt  len  i        if  numbers i      1        console log  Loop is going to break          break        console log  Loop will continue

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scope arr    0  1  2      scope dict      for   var i 0  i  lt   scope arr length  i           if    scope arr i     1              scope exists    yes  1 exists           break            if    scope exists          angular forEach    scope arr  function   value  index                            scope dict index    value

User · Answer

break isn t possible to achieve in angular forEach  we need to modify forEach to do that    scope myuser     name   Ravi     name   Bhushan     name   Thakur                       angular forEach  scope myuser  function name                     if name     Bhushan                         alert name                       return forEach break                           break   is a function that returns an immutable object e g  an empty string

User · Answer

There s no way to do this  See https   github com angular angular js issues 263  Depending on what you re doing you can use a boolean to just not going into the body of the loop  Something like   var keepGoing   true  angular forEach  0 1 2   function count     if keepGoing        if count    1         keepGoing   false

User · Answer

I realise this is old  but an array filter may do what you need   var arr    0  1  2  filter function  count        return count  lt  1        You can then run arr forEach and other array functions   I realise that if you intend to cut down on loop operations altogether  this will probably not do what you want  For that you best use while

User · Answer

Use Return to break the loop   angular forEach  0 1 2   function count     if count    1        return

User · Answer

Normally there is no way to break an  each  loop in javascript   What can be done usually is to use  short circuit  method    x000D   x000D      array forEach function item    x000D           if the condition is not met  move on to the next round of iteration  x000D        if   condition  return  x000D   x000D           if the condition is met  do your logic here x000D        console log  do stuff    x000D        x000D   x000D   x000D

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onSelectionChanged event        let selectdata   event  api    immutableService    gridOptionsWrapper    gridOptions    rowData        let selected flag   0       selectdata forEach data   gt          if  data selected    true            selected flag   1                       if  selected flag    1          this showForms   true        else         this showForms   false

User · Answer

I would prefer to do this by return  Put the looping part in private function and return when you want to break the loop

User · Answer

var ary     JavaScript    Java    CoffeeScript    TypeScript    var keepGoing   true  ary forEach function value  index   ary        console log index      keepGoing   true      ary forEach function value  index   ary            if keepGoing                if index  2                   keepGoing false                            else                  console log value

[angularjs] Angular JS break ForEach

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