angular.js - angular如何给一个boolean的值添加一个字段来判断

Question

如下：&lt;input type="text" readonly="ifReadOnly()"/&gt;readonly="expression" expression中如何根据控制器来获得呢， {代码...} readonly="expression" 写成readonly="ifRead

習慣沉默 · Answer

这样吧:

$scope.$watch('index', function(newIndex){
    $scope.ifReadOnly = newIndex !== '0';
});

淡淡烟草味 · Answer

html:

js:

// 默认值
$scope.demo = {
    readOnly: true
};

$scope.handleRead = function () {
    if ($scope.demo.readOnly) {
        // todo readonly
    } else {
        // todo not readonly
    }
};

ringa_lee · Answer

用ng-readyonly, https://docs.angularjs.org/api/ng/directive/ngReadonly