[英]Merge JSON Object with same “key” and add their “value” using JavaScript
[英]Unable to add key value in JSON object using javascript
我陷入一个非常奇怪的问题。 我之前已经做过很多次了,但是这次却没有用,我被困住了。
var updateObj = {};
db.child("symbols/" +name).once('value').then(function(data){
if(data.exists())
ticker.val().forEach(function(path){
addInJSON(path, data.val());
});
})
//Trying to add some dummy values to test
addInJSON("dummy", {val: "pummy"});
updateObj["dummykey"] = "dummy value";
for(key in updateObj){
console.log(key + " " + updateObj[key]);
}
function addInJSON(key, value){
updateObj[key] = value;
}
输出看起来像这样:输出看起来像这样:
对象{虚拟:对象,伪键:“虚拟值”}}
dummy:Object {val: "pummy"}
dummykey:"dummy value"
watchlist/41HJ5vonrUMMkH7TDwiSdAedhEL2/ADANIPOWER:Object {day_change: 2.25, day_change_percentage: 6.17, day_high: 40.05, …}
watchlist/41HJ5vonrUMMkH7TDwiSdAedhEL2/ARVIND:Object {day_change: -2.75, day_change_percentage: -0.6, day_high: 462.15, …}
watchlist/41HJ5vonrUMMkH7TDwiSdAedhEL2/ASHOKLEY:Object {day_change: 0.05, day_change_percentage: 0.04, day_high: 118.85, …}
问题
output: Object {dummy: Object, dummykey: "dummy value"}
Expected output: Object {dummy: Object, dummykey: "dummy value", "watchlist/41HJ5vonrUMMkH7TDwiSdAedhEL2/ADANIPOWER" :Object, ...}
要将值add
到objects
您可以执行myObject['someKey'] = 'someValue'
。 但是,如果您想以不同的方式添加值,我也为此添加了一个示例。 尝试查看该snippet
。
// Example 1 var myObject = {}; myObject['first'] = {}; myObject['second'] = {}; myObject['first']['firstFirst'] = 5; myObject['first']['firstSecond'] = 6; myObject['second']['secondFirst'] = 1; myObject['second']['secondSecond'] = 9; console.log("This is example 1."); console.log(myObject); // Example 2 var myObject2 = {}; Object.assign(myObject2, { first: { firstFirst: 5, firstSecond: 6 } }); Object.assign(myObject2, {second: { secondFirst: 1} }); Object.assign(myObject2['second'], { secondSecond: 9 }); console.log("\\nThis is example 2"); console.log(myObject2);
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