AngularJS Form 进阶：远程校验和自定义输入项

表单远程校验

HTML代码：

<!doctype html>
<html ng-app="form-example1">
    <head>
        <meta http-equiv="content-type" content="text/html; charset=utf-8" />
        <link href="../bootstrap/css/bootstrap.min.css" rel="stylesheet" media="screen">
        <script src="../angular-1.0.3/angular.js"></script>
        <script src="FormValidation.js"></script>
    </head>
    <body>
        <div>
            <form name="myForm" class="css-form" novalidate>
                <div>
                    整数(0-10):
                    <input type="number" ng-model="size" name="size" min="0" max="10" integer/>
                    {{size}}
                    <br/>
                    <span ng-show="myForm.size.$error.integer">不是合法的整数！</span>
                    <span ng-show="myForm.size.$error.min || myForm.size.$error.max">
                        数值必须位于0到10之间！
                    </span>
                </div>
                <div>
                    浮点数:
                    <input type="text" ng-model="length" name="length" smart-float />
                        {{length}}
                    <br/>
                    <span ng-show="myForm.length.$error.float">不是合法的浮点数！</span>
                </div>
                <div>
                    远程校验:
                    <input type="text" ng-model="remote" name="remote" remote-validation />
                        {{remote}}
                    <br/>
                    <span ng-show="myForm.remote.$error.remote">非法数据！</span>
                </div>
            </form>
        </div>
    </body>
</html>

JS代码：

var app = angular.module('form-example1', []);
var INTEGER_REGEXP = /^\-?\d*$/;
app.directive('integer', function() {
    return {
        require : 'ngModel',
        link : function(scope, elm, attrs, ctrl) {
            ctrl.$parsers.unshift(function(viewValue) {
                if (INTEGER_REGEXP.test(viewValue)) {
                    ctrl.$setValidity('integer', true);
                    return viewValue;
                } else {
                    ctrl.$setValidity('integer', false);
                    return undefined;
                }
            });
        }
    };
});

var FLOAT_REGEXP = /^\-?\d+((\.|\,)\d+)?$/;
app.directive('smartFloat', function() {
    return {
        require : 'ngModel',
        link : function(scope, elm, attrs, ctrl) {
            ctrl.$parsers.unshift(function(viewValue) {
                if (FLOAT_REGEXP.test(viewValue)) {
                    ctrl.$setValidity('float', true);
                    return parseFloat(viewValue.replace(',','.'));
                } else {
                    ctrl.$setValidity('float', false);
                    return undefined;
                }
            });
        }
    };
});

app.directive('remoteValidation', function($http) {
    return {
        require : 'ngModel',
        link : function(scope, elm, attrs, ctrl) {
            elm.bind('keyup', function() {
                $http({method: 'GET', url: 'FormValidation.jsp'}).
                success(function(data, status, headers, config) {
                    if(parseInt(data)==0){
                        ctrl.$setValidity('remote',true);
                    }else{
                        ctrl.$setValidity('remote',false);
                    }
                }).
                error(function(data, status, headers, config) {
                    ctrl.$setValidity('remote', false);
                });
            });
        }
    };
});

posted on 2017-04-23 14:18 codeing-or-artist-?? 阅读(302) 评论(0) 编辑收藏举报