lodash _.pullAt returning undefined at path

问题

I'm using lodash in a react app to update and delete nested elements in an array that contains objects which subsequently update my component state and saves to localStorage.

 questions = [{"question":"","type":"text","conditions":null,"isSub":false,"subQ":[]}]
 path = '[0]'

    //returns [undefined x 1]
function deleteQuestion(path){  
   const { questions } = this.state
   _.pullAt(questions, path)
  this.setState({questions: questions})
}

I'm new to lodash but what's the best way to delete elements by a path without returning null or undefined?

回答1:

_.pullAt takes integers, not a string

_.pullAt(questions, 0)  
console.log(questions)  // output is []

来源：https://stackoverflow.com/questions/45042019/lodash-pullat-returning-undefined-at-path