将type:[{}]里面的content转化成 下面choiceA=type[0].content
choiceB=type[1].content .....

const type = [
    { num: "A", content: "I'm A." },
    { num: "B", content: "I'm B." },
    { num: "C", content: "I'm C." }
]
const target = { /*...*/ }
type.forEach(i => target[ "choice" + i.num ] = i.content)

let obj={};

      for (let i = 0; i < this.form.type.length; i++) {
       obj[i] =this.form.type[i].content
        };
        let dataForm={};
            dataForm.active=0;
            dataForm.bid=this.form.bid;
            dataForm.createTime=this.form.createTime;
            dataForm.creater=this.form.creater;
            dataForm.modifyer=this.form.modifier;
            dataForm.questionContent=this.form.questionContent;
            dataForm.questionName=this.form.questionName;
            dataForm.questionType=this.form.questionType;
            dataForm.updateTime=this.form.updateTime;
            dataForm.answer=this.form.answer;
             dataForm.choiceA=obj[0];
            dataForm.choiceB=obj[1];
            dataForm.choiceC=obj[2];
             dataForm.choiceD=obj[3];
             dataForm.choiceE=obj[4]; 
             dataForm.choiceF=obj[5];
            dataForm.choiceG=obj[6];
            dataForm.createrName=this.form.createrName;
            dataForm.modifyerName=this.form.mmodifyerName;
            dataForm.questionTypeName=this.form.questionTypeName;
            
            

var data={
    form: {
        id: '',
        type: [{num: 'A', content: 'A content'}]
    }
};

data.form = {
    ...data.form, 
    ...data.form.type.reduce((res,item) => (res['chioce'+item.num]=item.content, res), {})
};

delete data.form.type