问题描述
要从对象中删除属性(改变对象),您可以这样做:
delete myObject.regex;
// or,
delete myObject['regex'];
// or,
var prop = "regex";
delete myObject[prop];
演示
var myObject = {
"ircEvent": "PRIVMSG",
"method": "newURI",
"regex": "^http://.*"
};
delete myObject.regex;
console.log(myObject);
如果你想要一个新对象,除了一些之外,所有的键都是原始的,你可以使用destructuring。
演示
let myObject = {
"ircEvent": "PRIVMSG",
"method": "newURI",
"regex": "^http://.*"
};
const {regex, ...newObj} = myObject;
console.log(newObj); // has no 'regex' key
console.log(myObject); // remains unchanged
解决方法
假设我创建一个对象如下:
let myObject = {
"ircEvent": "PRIVMSG","method": "newURI","regex": "^http://.*",};
我应该如何删除属性regex
以结束新myObject
的如下?
let myObject = {
"ircEvent": "PRIVMSG",};