How can I parse String to Int in an Angular expression

Question

A number string  5   var num str    5     How can I parseInt and let below answers correct at the same time     num str   1       6   num str - 1       4   parseInt can t be used in an Angular expression     parseInt num str  - 1         number filter can t do add and minus     num str - 1   number     If anyone have useful suggestion  I will very appreciate of you

User · Answer

I prefer to use an angular filter   app filter  num   function         return function input          return parseInt input  10                then you can use this in the dom      10  num     Here is a fiddle   Hope this helped

User · Answer

I tried the solutions mentioned above and none of them worked for me   I used JSON parse and it worked    http get   api getAdPolling      success function  data        console log  success      data length        if  JSON stringify data      not found              scope adPoll   JSON parse data               error function  data        console log  Error      data

User · Answer

You can create a Pipe and use it wherever you want in your system   import   Pipe  PipeTransform   from   angular core     Pipe           tslint disable-next-line pipe-naming      name   toNumber        pure  false    export class ToNumberPipe implements PipeTransform         public transform items  any   any            if   items                 return 0                      return parseInt items  10              In the HTML     attr text   toNumber      Remember to declare this Pipe to be accessfull in your modules file

User · Answer

Besides    1   num str   1   You can also try like this minus first       num str - 0   1     But the it s very fragile  if num str contains letters  then it will fail  So better should try writing a filter as  hassassin said  or preprocess the data right after initiating it

User · Answer

num str - 0         works for me

User · Answer

You can try      1   num str   1      http   jsfiddle net Z32fP

User · Answer

In your controller    scope num str   parseInt num str  10       parseInt with radix

User · Answer

Not really great but a funny hack  You can -- instead of      num str -- 1       x000D   x000D   lt script src  https   cdnjs cloudflare com ajax libs angular js 1 7 5 angular min js  gt  lt  script gt  x000D   lt div ng-app gt  x000D       1 --1   x000D   lt  div gt  x000D   x000D   x000D

User · Answer

None of the above worked for me   But this did       num1 str   1     num2 str   1

User · Answer

You can use javascript Number method to parse it to an number   var num Number  num str

User · Answer

Another option would be    scope parseInt   parseInt    Then you could do this like you wanted     parseInt num str -1     This is because angular expressions don t have access to the window  only to scope   Also  with the number filter  wrapping your expression in parentheses works      num str-1    number     DEMO

[javascript] How can I parse String to Int in an Angular expression?

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