Input里面模型的值:{{vm.modelTest}}
<input type="text" ng-model="vm.modelTest" model-render>
.directive('modelRender', function () {
return {
require: 'ngModel',
link: function (scope, iElm, iAttrs, ngModelCtrl) {
iElm.on('mouseenter', function () {
//尝试注释
iElm.val(1);
console.log(ngModelCtrl);
//尝试注释
ngModelCtrl.$setViewValue(11);
console.log(ngModelCtrl);
//尝试注释
ngModelCtrl.$render();
console.log(ngModelCtrl);
})
}
}
})
ctrl.$render = function() {
element.val(ctrl.$isEmpty(ctrl.$viewValue) ? '' : ctrl.$viewValue);
};
$scope.$watch(function ngModelWatch() {
//解析ngModel的表达式,获取内容
var modelValue = ngModelGet($scope);
// if scope model value and ngModel value are out of sync
// TODO(perf): why not move this to the action fn?
//判断表达式的值是否跟modelValue一致
if (modelValue !== ctrl.$modelValue &&
// checks for NaN is needed to allow setting the model to NaN when there's an asyncValidator
(ctrl.$modelValue === ctrl.$modelValue || modelValue === modelValue)
) {
//更新modelValue的值
ctrl.$modelValue = ctrl.$$rawModelValue = modelValue;
parserValid = undefined;
//获取管道信息
var formatters = ctrl.$formatters,
idx = formatters.length;
var viewValue = modelValue;
while (idx--) {
viewValue = formatters[idx](viewValue);
}
//如果viewValue和ModelValue不一致
if (ctrl.$viewValue !== viewValue) {
ctrl.$viewValue = ctrl.$$lastCommittedViewValue = viewValue;
ctrl.$render();
ctrl.$$runValidators(modelValue, viewValue, noop);
}
}
//返回解析的表达式
return modelValue;
});
}];
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