Question

在渲染我的页面组件时，我在Safari 7.0及更低版本和IE 11中出现了AngularDart 1.0.0抛出错误。当试图访问其中一个小部件（它正在循环的变量）时，它似乎死在ng-repeat循环内部。我的另一个组件（菜单）工作正常。我不确定我的组件导致了什么。错误的摘录是NoSuchMethodError: Cannot call "get$widget" ('undefined' is not a function (evaluating 'o.get$widget()'))。

一旦将AngularDart应用程序编译为JS，我在调试AngularDart应用程序时没有多少经验，但这里是上下文：

closure215: {
    "^": "Closure:14;",
    call$1: [function(o) {
      return o.get$widget();
    }, "call$1", null, 2, 0, null, 86, "call"],
    $isFunction: true
  },

它似乎在大多数其他浏览器上都能正常运行。在升级到1.0.0

之前，它还可以与AngularDart 0.14.0一起使用

这是来自IE 11的使用源地图的调用堆栈（我不知道IE具有该功能）：

Anonymous function [Line: 96, Col: 18], main_static_expressions.dart
DirtyCheckingRecord._getter$1 [Line: 398, Col: 3], dirty_checking_change_detector.dart
DirtyCheckingRecord.check$0 [Line: 464, Col: 25], dirty_checking_change_detector.dart
_FieldHandler.acceptValue$1 [Line: 631, Col: 5], watch_group.dart
FieldReadAST.setupWatch$1 [Line: 167, Col: 5], watch_group.dart
FieldReadAST.setupWatch$1 [Line: 158, Col: 5], watch_group.dart
FieldReadAST.setupWatch$1 [Line: 158, Col: 5], watch_group.dart
CollectionAST.setupWatch$1 [Line: 175, Col: 5], watch_group.dart
WatchGroup._addEvalWatch$7 [Line: 233, Col: 25], watch_group.dart
PureFunctionAST.setupWatch$1 [Line: 87, Col: 59], ast.dart
WatchGroup.watch$2 [Line: 140, Col: 3], watch_group.dart
Scope.watchAST$3$canChangeModel [Line: 271, Col: 5], scope.dart
Anonymous function [Line: 38, Col: 9], mustache.dart
NodeAttrs.listenObserverChanges$2 [Line: 79, Col: 5], directive.dart
AttrMustache.AttrMustache$4 [Line: 34, Col: 5], mustache.dart
AttrMustache.static.AttrMustache$ [Line: 28, Col: 3], mustache.dart
Anonymous function [Line: 259, Col: 7], element_binder.dart
ViewFactory._bindTagged$7 [Line: 77, Col: 17], view_factory.dart
ViewFactory._link$4 [Line: 119, Col: 13], view_factory.dart
ViewFactory.call$3 [Line: 58, Col: 5], view_factory.dart
ViewFactory.call$2 [Line: 62, Col: 3], view_factory.dart
Anonymous function [Line: 111, Col: 13], transcluding_component_factory.dart
Anonymous function [Line: 899, Col: 30], zone.dart
_ZoneDelegate.runUnary$3 [Line: 506, Col: 5], zone.dart
VmTurnZone__onRunUnary_closure.call$0 [Line: 122, Col: 43], zone.dart
VmTurnZone._onRunBase$4 [Line: 102, Col: 28], zone.dart
Anonymous function [Line: 121, Col: 39], zone.dart
Anonymous function [Line: 2, Col: 28], Function code (1189)
_CustomZone.runUnary$2 [Line: 801, Col: 5], zone.dart
_Future__propagateToListeners_handleValueCallback.call$0 [Line: 494, Col: 9], future_impl.dart
_Future.static._Future__propagateToListeners [Line: 578, Col: 15], future_impl.dart
_Future.static._Future__propagateMultipleListeners [Line: 431, Col: 7], future_impl.dart
_Future.static._Future__propagateToListeners [Line: 458, Col: 9], future_impl.dart
_Future._completeWithValue$1 [Line: 339, Col: 5], future_impl.dart
Anonymous function [Line: 401, Col: 7], future_impl.dart
Anonymous function [Line: 888, Col: 30], zone.dart
_ZoneDelegate.run$2 [Line: 499, Col: 5], zone.dart
Anonymous function [Line: 127, Col: 30], zone.dart
_FunctionChain.fn$0 [Line: 1181, Col: 42], scope.dart
RootScope._runAsyncFns$0 [Line: 923, Col: 9], scope.dart
Anonymous function [Line: 810, Col: 7], scope.dart
Anonymous function [Line: 315, Col: 7], scope.dart
Anonymous function [Line: 319, Col: 3], scope.dart
Anonymous function [Line: 768, Col: 7], scope.dart
Anonymous function [Line: 890, Col: 14], zone.dart
_ZoneDelegate.run$2 [Line: 499, Col: 5], zone.dart
VmTurnZone._finishTurn$2 [Line: 168, Col: 9], zone.dart
VmTurnZone._onRunBase$4 [Line: 111, Col: 32], zone.dart
Anonymous function [Line: 121, Col: 39], zone.dart
Anonymous function [Line: 2, Col: 28], Function code (1189)
_CustomZone.runUnary$2 [Line: 801, Col: 5], zone.dart
_CustomZone.runUnaryGuarded$2 [Line: 707, Col: 3], zone.dart
Anonymous function [Line: 735, Col: 20], zone.dart
invokeClosure_closure0.call$0 [Line: 1841, Col: 43], js_helper.dart
Anonymous function [Line: 443, Col: 5], isolate_helper.dart
_callInIsolate [Line: 35, Col: 1], isolate_helper.dart
Anonymous function [Line: 1841, Col: 5], js_helper.dart
Anonymous function [Line: 1861, Col: 37], js_helper.dart

Answer 1

我终于明白了，细节在这里：https://github.com/angular/angular.dart/issues/1572

我猜dart2js输出的代码是IE 11和Safari 7在纳入ng-include之前尝试自行评估模板的地方。在<template>所在的位置，其中使用的ng-repeat中的一个变量超出了范围，但是在ng-include的范围内。

AngularDart 1.0.0在IE 11和Safari 7及更低版本中存在问题

1 个答案: