javascript - 在 POST AngularJS 上更改按钮样式

Question

我有一个联系表单，在提交时，它会向后端文件发送一个 POST:

<div class="field text-center">
        <button type="submit" class="submit form-btn" ng-disabled="contactForm.$invalid">Send</button>
</div>

帖子:

$scope.processForm = function() {
        $http({
            method  : 'POST',
            url     : '/php/contact.php',
            data    : $.param($scope.contactData),  // pass in data as strings
            headers : { 'Content-Type': 'application/x-www-form-urlencoded' }  // set the headers so angular passing info as form data (not request payload)
        }).then(function successCallback(response) {

        }, function errorCallback(response) {

        });
}

我想在函数 POST 成功时和出现错误时更改按钮的颜色和文本。我的猜测是，在成功和错误回调函数中我必须更新 DOM，但我该怎么做呢？或者有更好/更简单的方法吗？

Answer 1

您可以使用 ngStyle更改 Controller 中 DOM 元素的样式。

HTML:

<div class="field text-center">
    <button ng-style="httpCall" type="submit" class="submit form-btn" ng-disabled="contactForm.$invalid">{{httpCallText}}</button>
</div>

JS:

$scope.processForm = function() {
    $http({
        method  : 'POST',
        url     : '/php/contact.php',
        data    : $.param($scope.contactData),  // pass in data as strings
        headers : { 'Content-Type': 'application/x-www-form-urlencoded' }  // set the headers so angular passing info as form data (not request payload)
    }).then(function successCallback(response) {
        var buttonColor = "green";
        $scope.httpCallText = "Success";
        $scope.httpCall = {
          'background-color': buttonColor
        }
    }, function errorCallback(response) {
        var buttonColor = "red";
        $scope.httpCallText = "Error";
        $scope.httpCall = {
          'background-color': buttonColor
        }
    });
}

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