NgStylelink

说明link

这些样式会根据表达式的求值结果进行更新：

The styles are updated according to the value of the expression evaluation:

• key 是样式名，可以带一个可选的 .<unit> 后缀（比如 'top.px', 'font-style.em'），

  keys are style names with an optional .<unit> suffix (ie 'top.px', 'font-style.em'),

• value 是一些与这些属性相关的值（以指定的单位表示）。

  values are the values assigned to those properties (expressed in the given unit).

      
        content_copy
      
      <some-element [ngStyle]="{'font-style': styleExp}">...</some-element>

<some-element [ngStyle]="{'max-width.px': widthExp}">...</some-element>

<some-element [ngStyle]="objExp">...</some-element>