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Object.keys和Object.values和Object.entries

老榆 2022-05-27 阅读 115

 let obj = {
name:'terry',
age:12,
gender:'male'
}
var keys = Object.keys(obj); //打印出来的是值 name,age,gender
var values= Object.values(obj); //打印出来的是值 terry,12,male
var entries= Object.entries(obj); //打印出来的是值 ['name':'terry'],['age':'12'],['gender':'male']

 for(let[key,value] of keys){
console.log(key);//name age gender
console.log(value);// terry,12,male
}

  for(var key in obj){
console.log(key);//name age gender
console.log(obj[key])// terry,12,male
}


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