Completing Forms Automatically with AngularJS

Hello! I'm just starting out with ng and I need to make an autocomplete textbox that will initiate an AJAX call when the text is changed. The catch is that the minimum length required to trigger the AJAX call is 3 characters. However, once the user enters the 4th, 5th, or 6th character, it should not trigger another AJAX call but instead sort from the previous data. In summary, the AJAX call should only occur when the first 3 characters are changed (and there must be at least 3 characters).

Thank you in advance!

javascriptangularjsajaxautocompletejquery-ui-autocomplete

Answer №1

Providing a comprehensive explanation in the form of an answer.

Below is the function to check for at least 3 letters:

$scope.checkTitle = function(lettersTyped){
    if(lettersTyped.length > 2){
            //make API call here
          $scope.limitTitleSearch = 500;
    }else{
          $scope.limitTitleSearch = 0;
    }
}

HTML5 features the <datalist> element for autocompletion with a select text box, but it may not work smoothly on Chrome due to its use of matches instead of contains. This might affect searching for "Hello" within "Hi! Hello there" on Chrome, although it works well on Firefox.

For a better alternative, I suggest utilizing angular-ui's ui-select. Refer to this Plnkr provided by mkearl. Hopefully, this solution proves beneficial!

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