我正在编写一个FormBuilderField扩展,它可以从 main 中获取所有装饰属性,ThemeObject但hintText我希望能够手动传递的属性除外。
从我的角度来看,主要问题如下:themeObject仅包含InputDecorationTheme没有属性的实例,因此我决定通过将实例转换为来hintText创建,然后使用方法注入缺少的属性。您可以查看下面的代码示例。InputDecorationInputDecorationThemeInputDecorationcopyWith
class MyNewAwsomeField extends FormBuilderField<String>{
# code that gets the theme object out of context (with is working fine)
static final theme = getThemeData();
MyNewAwsomeField ({
Key? key,
required String name,
required String hintText,
ValueChanged<String?>? onChanged,
}) : super(
key:key,
decoration: (theme.inputDecorationTheme as InputDecoration).copyWith(
hintText: hintText,
onChange: onChange,
name:name
)
}
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我收到的错误是“预期为‘InputDecoration’类型的值,但得到了‘InputDecorationTheme’类型之一......”。我理解这个错误,所以我想知道是否有一种方法可以InputDecoration从一个实例中获取 的实例InputDecorationTheme并向其添加自定义属性?
很高兴听到任何建议。
我想做什么? 我想使用节点模块和es6 javascript语法创建一个项目.为了使其尽可能模块化和独立,我决定改用watchify.我的html页面看起来像这样
...some unrelated html code
<dib id='content'></div>
<script type='text/javascript' src='correct(checked) path to my bundle.js file'></script>
...some unrelated html code
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我的whatchify命令看起来像这样
watchify src/app.js -o destination/bundle.js -t [babelify --presets [ es2015 ] ]
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虽然我的受抚养人看起来像这样
"dependencies": {
"bluebird": "^3.5.1",
"jquery": "^3.3.1",
"three": "^0.92.0",
"three-obj-exporter": "0.0.1",
"three-obj-loader": "^1.1.3"
},
"devDependencies": {
"babel-cli": "^6.26.0",
"babel-core": "^6.26.3",
"babel-preset-env": "^1.6.1",
"babel-preset-es2015": "^6.24.1",
"babel-preset-stage-2": "^6.24.1",
"babelify": "^8.0.0",
"nodemon": "^1.17.4"
}
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现在我的src文件中没有多少我只是从test.js文件中导入了一个测试函数,并且需要jquery.
import print from './taskobject';
function test(){
return 0;
}
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现在,我不明白? 字面上我什么都不做,但我仍然在控制台中得到以下错误
GET blob:http://127.0.0.1/fbfa8eff-f538-42cf-aa2d-ae2940247aaf 0 () …Run Code Online (Sandbox Code Playgroud)