JS中key-value存取

Posted 2021-03-22 jack_孟

获取Key

在代码中,遇到需要单独提取对象的key值时
可使用 Object.keys(object) object是你需要操作的对象
Object.keys()会返回一个存储对象中所有key值的数组
获取当前对象每个key对应的值使用 object[key]

 

参考：https://www.cnblogs.com/zhichong/p/9930309.html

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JS中key-value存取

我们来使用实际的代码测试看看结果

var mArr = [\'a\',\'b\',\'c\'];
var mObj = {};
mObj[\'key1\'] = 1;
mObj[\'key2@\'] = 2;
 
//遍历mObj
for(var pro in mObj){
    if(mObj.hasOwnProperty(pro)){
        console.log(\'key is \' + pro +\' and value is\' + mObj[pro]);
    }
}

console.log(Object.keys(mArr));//结果：(3) ["0", "1", "2"]
console.log(Object.keys(mObj));//结果：(2) ["key1", "key2@"]
console.log(mArr[1]);//结果：b
console.log(mObj[\'key2@\']);//结果：2.

 

 

出处：https://blog.csdn.net/zh854663752/article/details/80839402

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var peopleArray=[]
var peopleobj={jiangyx: "姜艳霞", yeluosen: "叶落森"}
for(let i in peopleobj){
debugger
var obj={
nickname:i,
realName:peopleobj[i]
}
peopleArray.push(obj)
}
console.log(peopleArray)

 

 

出处：https://www.cnblogs.com/web-chuanfa/p/10719052.html