Strip newline characters from information in AngularJS

Question

Strip newline characters from information in AngularJS

What is the recommended approach for detecting and formatting the "\n\n" line breaks within text received from the server before displaying it? Check out this Fiddle: http://jsfiddle.net/nicktest2222/2vYBn/

$scope.data = [{
    terms: 'You agree to be bound by the terms of this site. \n\n Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus tempus lectus ac nunc malesuada, fringilla feugiat nibh rhoncus. Vestibulum adipiscing mi in est consectetur, vitae facilisis nulla tristique. Nam eu ante egestas, ultricies tellus eu, suscipit neque.\n\n Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum et ligula non tellus semper iaculis eget vestibulum metus. Nunc aliquam eros sit amet sapien posuere, ac hendrerit risus ultricies. Vivamus nec enim sed eros placerat pulvinar a quis dui.',
    agreed: false
}];

javascript json angularjs

Answer 1

Answer №1

You can create a personalized filter to switch \n with  .

<p ng-bind-html-unsafe="data[0].terms | nl2br"></p>

Here is the filter.

angular.module('myApp', [])
  .filter('nl2br', function(){
      return function(text) {
           return text ? text.replace(/\n/g, '<br>') : '';
      };
});

** EDIT/UPDATE - 2014-12-10 **

With newer Angular versions eliminating ng-bind-html-unsafe, @Tamlyn's solution is now preferred. I changed how $sce is injected for better performance.

HTML

<p ng-bind-html="data[0].terms | nl2br"></p>

JS

.filter('nl2br', ['$sce', function ($sce) {
    return function (text) {
        return text ? $sce.trustAsHtml(text.replace(/\n/g, '<br/>')) : '';
    };
}]);

Check out this jsFiddle demo!

Answer 2

You can create a personalized filter to switch \n with  .

<p ng-bind-html-unsafe="data[0].terms | nl2br"></p>

Here is the filter.

angular.module('myApp', [])
  .filter('nl2br', function(){
      return function(text) {
           return text ? text.replace(/\n/g, '<br>') : '';
      };
});

** EDIT/UPDATE - 2014-12-10 **

With newer Angular versions eliminating ng-bind-html-unsafe, @Tamlyn's solution is now preferred. I changed how $sce is injected for better performance.

HTML

<p ng-bind-html="data[0].terms | nl2br"></p>

JS

.filter('nl2br', ['$sce', function ($sce) {
    return function (text) {
        return text ? $sce.trustAsHtml(text.replace(/\n/g, '<br/>')) : '';
    };
}]);

Check out this jsFiddle demo!

Answer 3

Answer №2

In Angular 1.2, the ng-bind-html-unsafe directive was removed, requiring a new solution to be implemented.

Here is the updated code:

<p ng-bind-html="data[0].terms | nl2br"></p>

Below is the JavaScript code for the new filter:

.filter('nl2br', function ($sce) {
    return function (text) {
        return text ? $sce.trustAsHtml(text.replace(/\n/g, '<br/>')) : '';
    };
})

Answer 4

In Angular 1.2, the ng-bind-html-unsafe directive was removed, requiring a new solution to be implemented.

Here is the updated code:

<p ng-bind-html="data[0].terms | nl2br"></p>

Below is the JavaScript code for the new filter:

.filter('nl2br', function ($sce) {
    return function (text) {
        return text ? $sce.trustAsHtml(text.replace(/\n/g, '<br/>')) : '';
    };
})

Answer 5

Answer №3

To display HTML content safely in AngularJS, you can utilize the ngBindHtmlUnsafe directive along with specifying the HTML terms within

terms: '... <br/><br/>...'

<p ng-bind-html-unsafe='data[0].terms'></p>

You have the option to either send the HTML directly or send a string formatted with \n and then replace it with   in AngularJS's controller. Both methods should be effective in achieving the desired result. Hope this solution proves useful.

View Demo

Answer 6

To display HTML content safely in AngularJS, you can utilize the ngBindHtmlUnsafe directive along with specifying the HTML terms within

terms: '... <br/><br/>...'

<p ng-bind-html-unsafe='data[0].terms'></p>

You have the option to either send the HTML directly or send a string formatted with \n and then replace it with   in AngularJS's controller. Both methods should be effective in achieving the desired result. Hope this solution proves useful.

View Demo

Answer 7

Answer №4

Here are some options for you:

utilize the pre element and retain the \n
apply the white-space:pre css property to keep the \n
substitute the \n with the   tag as suggested by @sza.

Answer 8

Here are some options for you:

utilize the pre element and retain the \n
apply the white-space:pre css property to keep the \n
substitute the \n with the   tag as suggested by @sza.

Answer 9

Answer №5

In case the variable 'text' is empty, an error will occur. To prevent this issue, I included the following code snippet:

.filter('nl2br', function(){
    return function(text){
        return text?text.replace(/\n/g, '<br/>'):'';
    };
});

Answer 10

In case the variable 'text' is empty, an error will occur. To prevent this issue, I included the following code snippet:

.filter('nl2br', function(){
    return function(text){
        return text?text.replace(/\n/g, '<br/>'):'';
    };
});

Answer 11

Answer №6

If you want to separate your text into paragraphs, you can easily achieve this by creating a simple filter:

.filter('lines', function() {
    return function(text) {
      return angular.isString(text) ? text.split(/\n/g) : text;
    }
  })

Then in your view, you can display the paragraphs using this filter:

<p ng-repeat="paragraph in myText | lines track by $index">{{ paragraph }}</p>

No need to use bind-html-unsafe for this purpose.

Check out the example below to see how it works:

angular.module('module', [])
  .filter('lines', function() {
    return function(text) {
      return angular.isString(text) ? text.split(/\n/g) : text;
    }
  })
  .controller('MyCtrl', function($scope) {
    $scope.myText = "First line\nSecondLine\nThird line\n\n\n\n\nAlone line";
  });

p {
  min-height: 1px;
}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="module">
  <div ng-controller="MyCtrl">
    <p ng-repeat="paragraph in myText | lines track by $index">{{ paragraph }}</p>
  </div>
</div>

I did not come up with this idea, but unfortunately, I cannot locate the original source at the moment

Answer 12

If you want to separate your text into paragraphs, you can easily achieve this by creating a simple filter:

.filter('lines', function() {
    return function(text) {
      return angular.isString(text) ? text.split(/\n/g) : text;
    }
  })

Then in your view, you can display the paragraphs using this filter:

<p ng-repeat="paragraph in myText | lines track by $index">{{ paragraph }}</p>

No need to use bind-html-unsafe for this purpose.

Check out the example below to see how it works:

angular.module('module', [])
  .filter('lines', function() {
    return function(text) {
      return angular.isString(text) ? text.split(/\n/g) : text;
    }
  })
  .controller('MyCtrl', function($scope) {
    $scope.myText = "First line\nSecondLine\nThird line\n\n\n\n\nAlone line";
  });

p {
  min-height: 1px;
}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="module">
  <div ng-controller="MyCtrl">
    <p ng-repeat="paragraph in myText | lines track by $index">{{ paragraph }}</p>
  </div>
</div>

I did not come up with this idea, but unfortunately, I cannot locate the original source at the moment

Strip newline characters from information in AngularJS

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

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