AngularJS replace using regex on template

Question

I have the following markup that shows a value from ng-model:

<a ng-click="downloadDocument()">{{document.content.replace(/\d+\_/,"")}}</a>

Before each document.content I add a number and an underscore, something like "12122141_document.txt". I want to replace this part by using the regex /\d+\_/.

This throws an error in AngularJS, although {{ document.replace(" ","") }} works.

Is the only way to solve this a directive or am I doing something wrong?

Plunker

Use a $scope with ng-bind and try handle it in your backend. docs.angularjs.org/guide/scope & docs.angularjs.org/api/ng/directive/ngBind — lin
– lin, Commented Mar 5, 2015 at 9:59
It won't work with ng-bind. Plunker: embed.plnkr.co/sh54XZwSIlYnmvY0eTIt/preview Error: [$parse:lexerr] Lexer Error: Unexpected next character at columns 26-26 [] in expression [document.content.replace(/\d+_/,'')] — Alex Arvanitidis
– Alex Arvanitidis, Commented Mar 5, 2015 at 10:32

lin · Accepted Answer · 2016-12-19 10:21:03Z

I modified your Plunker-Demo and it works pretty fine.

Hint: Don't use $scope namespaces like "document". Its reserved/used by the client.

var app = angular.module('plunker', []);

Controller

app.controller('MainCtrl', function($scope) {
  $scope.name = 'World';

  $scope.fileName = {
    content : function(){
      return '1233_test.txt'.replace(/\d+\_/,"");
    }
  }

  $scope.mpla = function () {
    console.log('clicked');
  }

});

View

<!DOCTYPE html>
<html ng-app="plunker">

<head>
  <meta charset="utf-8" />
  <title>AngularJS Plunker</title>
  <script>
    document.write('<base href="' + document.location + '" />');
  </script>
  <link rel="stylesheet" href="style.css" />
  <script data-require="[email protected]" src="https://code.angularjs.org/1.3.14/angular.js" data-semver="1.3.14"></script>
  <script src="app.js"></script>
</head>

<body ng-controller="MainCtrl">
  <p>Hello {{name}}!</p> 
  <a ng-click="mpla()" ng-bind="fileName.content()"></a>
</body>

</html>

Ok, the question was if I could do it by using curly brackets {{ }} on the .html file. Your solution is the next best thing so I added an ng-bind="getFilename()" and created this function to replace the string.
Using brackets is not the fine way in angular. Code inside brackets is parsed and executed not as $scope. Hope that helped ya out :). Cheers m8.

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