Question

我有一个对象：

var obj = {
  'a|a' : 1,
  'b|b' : 2
}

我想将obj更改为：

var obj = {
   'aa' : 1,
   'bb' : 2
}

其中属性a|a已更改为aa。

有没有办法做同样的事情？

Answer 1

你可以这样做：

Object.getOwnPropertyNames(obj).forEach(function (key) {
    obj[key.replace('|', '')] = obj[key];
    delete obj[key];
});

只需遍历所有对象键并将值分配给新密钥（不分析|），然后删除旧密钥。

Answer 2

        var obj = {
            'a|a': 1,
            'b|b': 2
        }

        let keys = Object.keys(obj);
        let newObj = {};
        for (let key of keys) {
            let transformedKey = key.replace("|","") ; // transform your key
            newObj[transformedKey] = obj[key]
        }

        console.log(newObj);

这是修复你的用例。

Answer 3

有许多方法可以迭代Object。我认为最直接的方法是使用function myWindow() { visitorEmail = document.getElementById("myEmail").value; var findSymbol = /[@]/g; var result = visitorEmail.match(findSymbol); if (result != "@") { document.getElementById("myEmail").focus(); } else { visitorName = document.getElementById("myName").value; visitorAddress = document.getElementById("myAddress").value; visitorPhone = document.getElementById("myPhone").value; visitorPersonal = document.getElementById("myPersonal").value; visitorCareer = document.getElementById("myCareer").value; visitorEdu = document.getElementById("myEdu").value; visitorEmp1 = document.getElementById("myEmp1").value; visitorEmpDets1 = document.getElementById("myEmpDets1").value; visitorEmp2 = document.getElementById("myEmp2").value; visitorEmpDets2 = document.getElementById("myEmpDets2").value; visitorEmp3 = document.getElementById("myEmp3").value; visitorEmpDets3 = document.getElementById("myEmpDets3").value; visitorEmp4 = document.getElementById("myEmp4").value; visitorEmpDets4 = document.getElementById("myEmpDets4").value; visitorRef = document.getElementById("myRef").value; myTop = ("<html>\n<head>\n<title>Resume</title>\n</head>\n<body>\n"); myTop += (visitorName + " "); myTop += (visitorAddress + " "); myTop += (visitorPhone + " "); myTop += (visitorEmail + "<hr>" + " "); myText = ("<html>\n<head>\n<title>Resume</title>\n</head>\n<body>\n"); myText += (visitorPersonal + " "+ " "); myText += (visitorCareer + " "+ " "); myText += (visitorEdu += " "+ " "); myText += (visitorEmp1 += " "); myText += (visitorEmpDets1 += " "+ " "); myText += (visitorEmp2 += " "); myText += (visitorEmpDets2 += " "+ " "); myText += (visitorEmp3 += " "); myText += (visitorEmpDets3 += " "+ " "); myText += (visitorEmp4 += " "); myText += (visitorEmpDets4 += " "+ " "); myText += (visitorRef += " "); myText += ("</body>\n</html>"); myHeadings = ("<html>\n<body>\n"); myHeadings += ("PERSONAL INFORMATION"+ " "); myHeadings += ("CAREER OBJECTIVES"+ " "); myHeadings += ("EDUCATIONAL BACKGROUND"+ " "); myHeadings += ("EXPERIENCE"+ " "); myHeadings += ("BUSINESS REFERENCES"+ " "); flyWindow = window.open('about:blank','myPop','width=600,height=500,left=200,top=200'); flyWindow.document.write('<html><head><link rel="stylesheet" type="text/css" href="jsStyles.css" /></head><body><div>' + myTop + myText + '</div></body></html>'); } }语句：

for..in

因此，更改密钥名称将涉及使用for (let key in obj) { console.log(key, '=>', obj[key]); }更改密钥名称：

＆＃13;

String.replace

＆＃13;

如果您不想创建新对象，可以添加新密钥和var obj = { 'a|a' : 1, 'b|b' : 2 } let newObj = {}; for (let key in obj) { if (obj.hasOwnProperty(key)) { newObj[key.replace('|', '')] = obj[key]; } } console.log(newObj);

delete obj[key]

另一种方法是在键/属性上使用for (let key in obj) { if (obj.hasOwnProperty(key)) { obj[key.replace('|', '')] = obj[key]; delete obj[key]; } }：

Array.reduce

Javascript修改对象属性本身

3 个答案: