res.data.data.list = [
    {
        id:"1",
        name:"Lily",
        project:"math"
    },
    {
        id:"2",
        name:"Lucy",
        project:"English"
    },
    {
        id:"3,
        name:"John",
        project:"math"
    },
]

我想將數據中project為math的全都替換成Chinese

代碼：

//接口返回的數據下
res.data.data.list.forEach(item=>{
     item.project = this.changeItem(item.project )
})

//定義在method中的方法
changeItem(value){
    if(value.project == 'math'){
         value.project = 'Chinese'
} else {
  return value
 }
}