在RC.1中,使用绑定语法无法添加某些样式

Question

风格如

<div [style.background-image]="\'url(\' + image + \')\'">Background</div>
<div [style.transform]="rotate(7deg)"

不再添加

Answer 1

更新(2.0.0最终版)

import { Pipe, PipeTransform } from '@angular/core';
import { DomSanitizer } from '@angular/platform-browser';

@Pipe({name: 'safeHtml'})
export class SafeHtml implements PipeTransform {
  constructor(private sanitizer:DomSanitizer){}

  transform(html) {
    return this.sanitizer.bypassSecurityTrustStyle(html);
    // return this.sanitizer.bypassSecurityTrustHtml(html);
    // return this.sanitizer.bypassSecurityTrustScript(html);
    // return this.sanitizer.bypassSecurityTrustUrl(html);
    // return this.sanitizer.bypassSecurityTrustResourceUrl(html);
  }
}

另请参见https://angular.io/api/platform-b​​rowser/DomSanitizer

<div [innerHTML]="someHtml | safeHtml"

更新

DomSanitizationService将DomSanitizer在RC.6中重命名为

原版的

这应该在RC.2中修复

另请参阅Angular2开发人员指南 - 安全性

Angular2引入了CSS值的静态处理[innerHTML]=...和[src]="..."RC.1中的属性绑定

另见https://github.com/angular/angular/issues/8491#issuecomment-217467582

可以使用将值标记为受信任 DomSanitizer.bypassSecurityTrustStyle(...)

import {DomSanitizer} from '@angular/platform-browser';
...
constructor(sanitizer: DomSanitizationService) {
  this.backgroundImageStyle = sanitizer.bypassSecurityTrustStyle('url(' + this.image + ')');
  // for HTML
  // this.backgroundImageStyle = sanitizer.bypassSecurityTrustHtml(...);

}

并绑定到此值而不是不受信任的普通字符串.

这也可以用管子包裹

@Pipe({name: 'safeStyle'})
export class Safe {
  constructor(private sanitizer:Sanitizer){}

  transform(style) {
    return this.sanitizer.bypassSecurityTrustStyle(style);
    // return this.sanitizer.bypassSecurityTrustHtml(style);
    // return this.sanitizer.bypassSecurityTrustScript(value);
    // return this.sanitizer.bypassSecurityTrustUrl(value);
    // return this.sanitizer.bypassSecurityTrustResourceUrl(value);
  }
}

<div [ngStyle]="someStyle | safeStyle"></div>

同

someHtml = `<a href="#" onClick="alert(document.cookie);">click to see the awesome</a>`;

仍在工作: - [(它正在进行中)

Plunker示例(Angular 2.0.0-rc-1)

另见Angular 2安全跟踪问题

和https://angular.io/docs/ts/latest/api/platform-b​​rowser/index/DomSanitizer-class.html

提示 {{...}}

无法绑定已清理的内容,prop="{{sanitizedContent}}"因为{{}}stringyfies分配之前的值会中断清理.