Angular SASS (.scss) 剥离属性。如何防止这种情况发生，以便我可以嵌入重复的属性以实现跨浏览器兼容性？
要复制，请创建一个新的 Angular 7.2 项目
{
"name": "default-app",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"@angular/animations": "~7.2.0",
"@angular/common": "~7.2.0",
"@angular/compiler": "~7.2.0",
"@angular/core": "~7.2.0",
"@angular/forms": "~7.2.0",
"@angular/platform-browser": "~7.2.0",
"@angular/platform-browser-dynamic": "~7.2.0",
"@angular/router": "~7.2.0",
"core-js": "^2.5.4",
"rxjs": "~6.3.3",
"tslib": "^1.9.0",
"zone.js": "~0.8.26"
},
"devDependencies": {
"@angular-devkit/build-angular": "~0.13.0",
"@angular/cli": "~7.3.9",
"@angular/compiler-cli": "~7.2.0",
"@angular/language-service": "~7.2.0",
"@types/node": "~8.9.4",
"@types/jasmine": "~2.8.8",
"@types/jasminewd2": "~2.0.3",
"codelyzer": "~4.5.0",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~4.0.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.1",
"karma-jasmine": "~1.1.2",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.4.0",
"ts-node": "~7.0.0",
"tslint": "~5.11.0",
"typescript": "~3.2.2"
}
}
将“teststyle”类添加到组件中的任何元素。
<div style="text-align:center" class="teststyle">Hello </div> <router-outlet></router-outlet>
在组件对应的.scss文件中应用
.teststyle
{
background: #a64bf4;
background: -webkit-linear-gradient(right, #6ab443, #04a95f, #00d421);
background: -o-linear-gradient(right, #6ab443, #04a95f, #00d421);
background: -moz-linear-gradient(right, #6ab443, #04a95f, #00d421);
background: linear-gradient(right, #6ab443, #04a95f, #00d421);
}
角度预处理器会删除除第一个属性和最后一个属性之外的所有内容。 对应的css是这样的。 -webkit-线性梯度、-o-线性梯度和-moz-线性梯度不是转译的css/js文件。这是一个 tarnspilation 问题，而不是浏览器问题。
当我使用直接 css 时，我看到了这一点，这是正确的。
还包括 angular.json
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"default-app": {
"root": "",
"sourceRoot": "src",
"projectType": "application",
"prefix": "app",
"schematics": {
"@schematics/angular:component": {
"style": "scss"
}
},
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"outputPath": "dist/default-app",
"index": "src/index.html",
"main": "src/main.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "src/tsconfig.app.json",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles.scss"
],
"scripts": [],
"es5BrowserSupport": true
},
"configurations": {
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractCss": true,
"namedChunks": false,
"aot": true,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true,
"budgets": [
{
"type": "initial",
"maximumWarning": "2mb",
"maximumError": "5mb"
}
]
}
}
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"options": {
"browserTarget": "default-app:build"
},
"configurations": {
"production": {
"browserTarget": "default-app:build:production"
}
}
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "default-app:build"
}
},
"test": {
"builder": "@angular-devkit/build-angular:karma",
"options": {
"main": "src/test.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "src/tsconfig.spec.json",
"karmaConfig": "src/karma.conf.js",
"styles": [
"src/styles.scss"
],
"scripts": [],
"assets": [
"src/favicon.ico",
"src/assets"
]
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": [
"src/tsconfig.app.json",
"src/tsconfig.spec.json"
],
"exclude": [
"**/node_modules/**"
]
}
}
}
},
"default-app-e2e": {
"root": "e2e/",
"projectType": "application",
"prefix": "",
"architect": {
"e2e": {
"builder": "@angular-devkit/build-angular:protractor",
"options": {
"protractorConfig": "e2e/protractor.conf.js",
"devServerTarget": "default-app:serve"
},
"configurations": {
"production": {
"devServerTarget": "default-app:serve:production"
}
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": "e2e/tsconfig.e2e.json",
"exclude": [
"**/node_modules/**"
]
}
}
}
}
},
"defaultProject": "default-app"
}
Angular 使用 Autoprefixer 添加任何所需的供应商前缀并删除不需要的前缀。基本上您无需担心添加任何内容，因为它们会为您添加。被删除的那些是因为不需要它们。
查看：https://caniuse.com/?search=linear-gradient 使用和支持
-webkit-linear-gradient仅需要-o-linear-gradient仅 Opera 11.5 和 Opera mobile 12（2011-2012 发布）需要，全球浏览器的比例为 0%-moz-linear-gradient仅 Firefox 3.5-15（2010-2012 发布）需要，占浏览器的 0.01%如果您仍然希望/需要在 2018 年推出的 Angular 版本中使用 0% 使用 10 多年的旧浏览器支持 CSS 渐变，您只需添加一个
src/browserslist文件（ 相关问题）您可以在此处了解该文件格式