Angular - implementing live filtering

My data consists of an array of objects:

[{
  name: "test",
  type: 0,
  speed: 50
}, {
  name: "test2",
  type: 4,
  speed: 10
}, {
  name: "test3",
  type: 4,
  speed: 67
}, {
  name: "test4",
  type: 2,
  speed: 40
}]

I am looking to display this array using ng-repeat. So far, so good...

Now, I am interested in adding buttons that filter the array based on specific criteria.

For example, one button would only show objects with a speed greater than X, while another button would only show objects with a type of Y and so on...

While I am familiar with angular filters, I am having trouble understanding how to apply them to suit my requirements.

Any help or guidance would be greatly appreciated!

javascriptangularjsfiltering

Answer №1

If you're looking for the ideal solution to meet your needs, consider using the 'filter' function in AngularJS. This versatile filter allows for custom filtering functions as arguments.

Embedding in HTML

<div ng-repeat="item in items|filter:customFilter"></div>

Next, define the 'customFilter' function in your controller:

In JavaScript

// Let's say the first button toggles the '$scope.hideSlow' flag and the second one is for '$scope.showType'
$scope.customFilter = function(item) {
    return (!$scope.hideSlow || item.speed > X) && 
       (!$scope.showType || item.type === Y);
}

You have the freedom to incorporate additional filtering logic into this function, but don't forget to test it thoroughly to ensure its effectiveness.

Answer №2

One way to enhance the functionality is by developing a personalized filter that scans through the model to generate the desired outcome from the filter. Connect the buttons to functions within the scope to verify directly from the filter.

Explore more here: https://docs.angularjs.org/tutorial/step_09

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