react在ie10出现 无法获取未定义或 null 引用的属性“content”

Question

这是我的代码
constructor(arg) {

super(arg);
this.state = {
  content: this.props.content.contentType === "common" ? this.props.content.content.slice(0, 4) : null,
  listIndex: 4,
  problemType: 'common',
  events: this.props.ProfessionalProblemList,
  beginX: null,
  beginY: null,
  endX: null,
  endY: null
}

};

Answer 1

ie中需要把this.props修改成arg，即在super中声明的参数