Question

这是我的代码我想检查一下，如果数组包含这个特定的字符串“Identicon”。我正在寻找一个代码作为解决方案，我只想查看条件。

 $scope.profileImageOptions = [
                      {
                Type: "Identicon",
                Code: "identicon"
            },
            {
                Type: "MonsterID",
                Code: "monsterid"
            },

        ];

    if($scope.profileImageOptions.indexOf($rootScope.settings.defaultImage) >-1)
{
    console.log('ok');

    }

Answer 1

您可以将includes方法与some方法结合使用。

some方法接受callback提供的函数作为参数，该函数适用于array中的每个项目。

profileImageOptions = [
            {
                Type: "Identicon",
                Code: "identicon"
            },
            {
                Type: "MonsterID",
                Code: "monsterid"
            },

];
var exist=profileImageOptions.some(function(item){
  return item.Type.includes("Identicon");
});
console.log(exist);

此外，您可以使用arrow function来简化代码。

profileImageOptions.some(item => item.Type.includes("Identicon"))

Answer 2

$scope.profileImageOptions.some(element => element.Type.includes('Identicon'));

让我们在Javascript中使用https://blog.magnusmontin.net/2013/04/20/implement-a-confirmation-dialog-in-wpf-with-mvvm-and-prism/：

$(function() {
    $('input[name="daterange"]').daterangepicker();
    $('input[name="daterange"]').change(function(){
      $(this).val();
      console.log($(this).val());
    });
});

Answer 3

你可以这样做：

<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>

<div ng-app="myApp" ng-controller="personCtrl">

<p>The name is {{ result[0].Type == "Identicon" ? "OK" : "Not OK"}}</p>

</div>

<script>
angular.module('myApp', []).controller('personCtrl', function($scope) {
$scope.profileImageOptions = [
                      {
                Type: "Identicon",
                Code: "identicon"
            },
            {
                Type: "MonsterID",
                Code: "monsterid"
            },

        ];

        $scope.result = $scope.profileImageOptions.filter(function(res){
        return res.Type ==  "Identicon";});
});
</script>

</body>
</html>

检查example

如何检查数组对象是否包含angularjs中的一个字符串

3 个答案: