Angular 4.x NgClass ngStyle 指令用法

  1. <some-element [ngClass]="'first second'">...</some-element>
  3. <some-element [ngClass]="['first', 'second']">...</some-element>
  5. <some-element [ngClass]="{'first': true, 'second': true, 'third': false}">...</some-element>
  7. <some-element [ngClass]="stringExp|arrayExp|objExp">...</some-element>
  9. <some-element [ngClass]="{'class1 class2 class3' : true}">...</some-element>
  1. <div [ngStyle]="{'background-color':'green'}"></<div>  
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原文地址：https://www.cnblogs.com/mary-123/p/10566391.html