js遍历数组以及获取数组对象的key和key的值方法

数组：

    let arr = [
          {
    
     appendData: {
    
     "Expiration Date mm- dd - yyyy(2D)": "03-04-2025" }},
          {
    
    appendData:  {
    
     "Manufacturer(21P)": "MURATA" }}
    ]

 arr.forEach((value,i)=>{
    
     //数组循环
    for(var pl in value){
    
     //数组对象遍历
     console.log(pl); //获取key
     console.log(value[pl]) //获取key的值
 }
})

打印

数组

    let arr = [
          {
    
     "Expiration Date mm- dd - yyyy(2D)": "03-04-2025" },
          {
    
     "Manufacturer(21P)": "MURATA" }
    ]

 arr.forEach((value, i) => {
    
     //数组循环
          for (var pl in value) {
    
     //数组对象遍历
            console.log(pl, '获取key'); //获取key
            console.log(value[pl], '获取key的值') //获取key的值
          }
        })

打印结果