Validate a textbox input with an array list in angularjs - angularjs

Question

I am very new to AngularJS and currently I am working on a form which is designed in angularjs.
My task is to validate a textbox input with a list. If the value entered in textbox is not present in the list then it should throw a validation error.
I have written the below lines of code for getting the list items through rest API:
app.factory("EatonScanningFactory", ['$http', function($http) {
var EatonScanningFactoryObj = {};
EatonScanningFactoryObj.GetToolMaxTimeList = function (columnName) {
return $http({
method: 'GET',
url: _spPageContextInfo.webAbsoluteUrl
+ "/_api/web/lists/getbytitle('Tool%20Max%20Time')/Items/"
+ "?$select=Text,Value&$orderby=Text&$filter=Title eq '" + columnName + "'",
headers: { "Accept": "application/json;odata=verbose" }
});
}
It will return the list items into an array.
The below lines of code are for accessing calling the above function:
var getToolId = EatonScanningFactory.GetToolMaxTimeList('ToolNumber');
var getMaxLife = EatonScanningFactory.GetToolMaxTimeList('MaxLife');
I am unable to proceed further as I am not sure how to validate if my text box input is available in the list or not.
Please help

Answer 1

Hi there here is a plausible solution as an example:
$scope.list = EatonScanningFactory.GetToolMaxTimeList('MaxLife');
Javascript (Native) Example:
function validateList() {
var IsInList = false;
for (var i = 0; i < $scope.list.length; i++) {
if ($("#textbox").val() == $scope.list[i].listvalue) {
IsInList = true;
break;
}
}
return IsInList;
}
Angular Example:
$scope.validateFunction = function() {
angular.forEach($scope.list, function(value, key){
var IsInList = false;
if($("#textbox").val() == value.listvalue) {
IsInList = true;
break;
}
});
return IsInList;
}
//Invoke the function like follow:
$scope.validateFunction();