假设我有几个JavaScript对象
{"type":"gotopage","target":"undefined"}
{"type":"press","target":"a"}
{"type":"rotate","target":"long"}
我怎样才能将这些对象添加到另一个对象中,就像这样
config={}
我知道如果每个插入的对象都有一个ID,我可以这样添加:
config["id"]={}
但在这种情况下,我如何添加没有id的对象?
假设我有几个JavaScript对象
{"type":"gotopage","target":"undefined"}
{"type":"press","target":"a"}
{"type":"rotate","target":"long"}
我怎样才能将这些对象添加到另一个对象中,就像这样
config={}
我知道如果每个插入的对象都有一个ID,我可以这样添加:
config["id"]={}
但在这种情况下,我如何添加没有id的对象?
var obj1 = {"type":"gotopage","target":"undefined"};
var config = {};
config.obj1 = obj1;
您可以稍后随时添加它们。
var obj1 = {"type":"gotopage","target":"undefined"};
var config = {};
config.obj1 = obj1;
var obj2 = {"key":"data"};
config.obj2 = obj2;
我认为你混淆了对象和数组。对象有命名的键,数组有数字键。你可以使用.push()
轻松地向数组中添加元素:
var arr = [];
arr.push("something");
然而,对于一个配置对象来说,像你的变量名所示这并不是很有用。相反,你应该为你的选项使用有意义的名称,例如:
var config = {
something: 'blah',
foo: 'bar'
};
config.manyStuff = [];
for(...) {
manyStuff.push(...);
}
object1 = { property1: 1, property2: 2}
finalObject = [{...object1}]
finalObject = {...object1}
根据您的问题解决方案,在此处使用数组对象finalObject = [{...object1}]
object1 = { property1: 1, property2: 2}
finalObject = [{...object1}]
document.getElementById("demo").innerHTML = JSON.stringify(finalObject);
<div id = "demo"></div>
finalObject
,而不是像原始问题所要求的那样添加到它。 - Aurovratavar some_data = {"type":"gotopage","target":"undefined"}
var config = [];
var config.push(some_data); //and do this for the rest
您可以像这样访问配置项:
var someVariable = config[index]; //where index is a number starting from 0
let obj = { id:"hello", class: "world"};
let extra = {style:"{color:red}"};
obj = {...obj, ...extra}; //extra values will be appended to obj.
const
,那么它将无法重新赋值,因此以下解决方案将起作用。const obj = {id:"hello", class: "world"};
let extra = {style:"{color:red}"};
Object.keys(extra).forEach(k=> obj[k] = extra[k]);
我正在使用这个实用函数:
module.exports.combine = function() {
var rv = {};
for (i = 0; i < arguments.length; i++) {
for (thing in arguments[i]) {
rv[thing]=arguments[i][thing];
}
}
return rv;
}
具有相同名称的属性将被后续参数中的属性覆盖
var util = require('lib/util.js');
console.log(util.combine(
{"1":"one","two":function(){;},
{"four":{"four.5":"four.5-b"}, "5":"foo"}});
结果:
{ '1': 'one',
'5': 'foo',
two: [Function],
four: { 'four.5': 'four.5-b' } }
var config = [
{"type":"gotopage","target":"undefined"},
{"type":"press","target":"a"},
{"type":"rotate","target":"long"}
]