我是新来AngularJS,我试图削减/片/从变量($ scope.checkTotal)删除最后一个字符时NG-点击=“德尔() “被点击。
也许我的做法是错误的,但到目前为止,我已经试过:
$scope.checkTotal.slice($scope.checkTotal, -1);
$scope.checkTotal.substring(0, $scope.checkTotal.length - 1);
$scope.checkTotal.substring(0, length - 1);
.controller('tipController', function($scope) {
// Numpad
$scope.checkTotal = '0.00';
$scope.clicked = function (label) {
if($scope.checkTotal === '0.00') {
$scope.checkTotal = label;
} else {
$scope.checkTotal += label;
}
};
// Prevent multiple decimals
$scope.clickedDot = function() {
if (($scope.checkTotal.indexOf('.') < 0) || ($scope.checkTotal === '0.00')) {
if ($scope.checkTotal === '0.00') {
$scope.checkTotal = '0.';
} else {
$scope.checkTotal += '.';
}
}
};
$scope.del = function() {
$scope.checkTotal.substring(0, length - 1);
};
});
'$ scope.checkTotal = $ scope.checkTotal.substring(0,长度 - 1)' –
任何你已经试过什么工作,只要您指定的新值变量。 –