Typescript常见语法错误

• Property 'attachEvent' does not exist on type 'Window' 

(window).attachEvent("onmessage", callback);

 

• does not exist on type of GlobalEventHandlers

const el: HTMLElement | null = document.querySelector('xxx');

• Parameter 'el' implicitly has an 'any' type.

  //Parameter 'el' implicitly has an 'any' type.
  const parentKey = root.find(el => el === node).parent;
  //修改为：
  const parentKey = root.find((el:any) => el === node).parent;
  
  

   

• Property 'name' has no initializer and is not definitely assigned in the constructor.

  name!:string;    //使用这种定义方式，而不采用 name:string