I want to slice a JSON array, but get the following error:
Object # has no method 'slice'
The following is my code:
$scope.getPagedDataAsync = function (pageSize, page, searchText) {
setTimeout(function () {
var data;
programService.query({
id: $routeParams.id
}, function (result) {
data = {
'program': result
};
data = JSON.stringify(data);
data = JSON.parse(data);
$scope.setPagingData(data,page,pageSize);
});
}, 100);
};
$scope.setPagingData = function(data, page, pageSize){
var pagedData = data.slice(0, 3);
$scope.myData = pagedData;
$scope.totalServerItems = data.length;
if (!$scope.$$phase) {
$scope.$apply();
}
};
JSON data:
{programId:1,
programName:project1,
programContent:content1,
programStartDate:2012-01-01,
templateId: '1'}
I want to slice the array as follows: programId, 1, programName, project1, ...
I am so confused , please help.
Try
var data = {
programId:1,
programName:'project1',
programContent:'content1',
programStartDate:'2012-01-01',
templateId: '1'
}
var array = [];
for(var key in data){
if(!data.hasOwnProperty(key)){
continue;
}
array.push(key, data[key])
}
console.log(array, array.slice(0, 4))
Related
Im trying to implement the XLS Extension. In the ModelData class, i cannot get objects leaf nodes because the viewer is undefined.
Here is the problematic method:
getAllLeafComponents(callback) {
// from https://learnforge.autodesk.io/#/viewer/extensions/panel?id=enumerate-leaf-nodes
viewer.getObjectTree(function (tree) {
let leaves = [];
tree.enumNodeChildren(tree.getRootId(), function (dbId) {
if (tree.getChildCount(dbId) === 0) {
leaves.push(dbId);
}
}, true);
callback(leaves);
});
}
Im getting Cannot read properties of undefined (reading 'getObjectTree') , meaning viewer is undefined.
However, viewer is working and displaying documents.
I tried to call it by window.viewer and this.viewer to no avail.
Thanks in advance for any help
It looks like it missed two lines. Could you try the revised one below?
// Model data in format for charts
class ModelData {
constructor(viewer) {
this._modelData = {};
this._viewer = viewer;
}
init(callback) {
var _this = this;
var viewer = _this._viewer;
_this.getAllLeafComponents(function (dbIds) {
var count = dbIds.length;
dbIds.forEach(function (dbId) {
viewer.getProperties(dbId, function (props) {
props.properties.forEach(function (prop) {
if (!isNaN(prop.displayValue)) return; // let's not categorize properties that store numbers
// some adjustments for revit:
prop.displayValue = prop.displayValue.replace('Revit ', ''); // remove this Revit prefix
if (prop.displayValue.indexOf('<') == 0) return; // skip categories that start with <
// ok, now let's organize the data into this hash table
if (_this._modelData[prop.displayName] == null) _this._modelData[prop.displayName] = {};
if (_this._modelData[prop.displayName][prop.displayValue] == null) _this._modelData[prop.displayName][prop.displayValue] = [];
_this._modelData[prop.displayName][prop.displayValue].push(dbId);
})
if ((--count) == 0) callback();
});
})
})
}
getAllLeafComponents(callback) {
var _this = this;
var viewer = _this._viewer;
// from https://learnforge.autodesk.io/#/viewer/extensions/panel?id=enumerate-leaf-nodes
viewer.getObjectTree(function (tree) {
var leaves = [];
tree.enumNodeChildren(tree.getRootId(), function (dbId) {
if (tree.getChildCount(dbId) === 0) {
leaves.push(dbId);
}
}, true);
callback(leaves);
});
}
hasProperty(propertyName){
return (this._modelData[propertyName] !== undefined);
}
getLabels(propertyName) {
return Object.keys(this._modelData[propertyName]);
}
getCountInstances(propertyName) {
return Object.keys(this._modelData[propertyName]).map(key => this._modelData[propertyName][key].length);
}
getIds(propertyName, propertyValue) {
return this._modelData[propertyName][propertyValue];
}
}
i am sending following text in body parameter
[{"full_image":"alskdfhlkjasvbuialsdvlasljkvbaslvjhbalfdghbakjldfgjlajkshfiuqr","type":"jpg"},{"full_image": "alskdfhlkjasvbuialsdvlasljkvbaslvjhbalfdghbakjldfgjlajkshfiuqr","type":"jpg"}]
and then parsing it JSON.pasrebut i am unable get get lenght and loop the json. following is the code.
var images = req.body.images;
JSON.parse(images, function(key,value){
var counter = key.length;
var seaWeedPicture = {};
var base64FullImage = value;
seaweedfs.write(new Buffer(base64FullImage, 'base64')).then(function (pic) {
var seaWeedPicture = {
picture: config.seaWeedURL + '/' + pic.fid
};
}).catch(function(err){
console.log(err);
res.format({
json: function () {
res.send({
status: 200,
data: []
});
}
});
});
the generated error is [TypeError: must start with number, buffer, array or string]
You can get length by Object constructor
var length=Object.keys(images).length;
//Do your loop with `length`
console.log(Object.keys(images).length);//2
var record = [{"full_image":"alskdfhlkjasvbuialsdvlasljkvbaslvjhbalfdghbakjldfgjlajkshfiuqr","type":"jpg"},{"full_image": "alskdfhlkjasvbuialsdvlasljkvbaslvjhbalfdghbakjldfgjlajkshfiuqr","type":"jpg"}]
console.log(record.length);
for(var i=0;i<record.length;i++){console.log(record[i]['full_image']);}
Do like this:
I have this JSON.stringify(array) result: ["id:1x,price:150","id:2x,price:200"] and I have to convert it in a json format similar to this (it would be sent to php):
[{
"id":"1x",
"price":150
},
{
"id":"2x",
"price":200
}]
Please help.
You can convert the structure of your data before using JSON.stringify, for example you can convert the data to a list of objects like so:
var strItems = ["id:1x,price:150", "id:2x,price:200"];
var objItems = [];
for (var i = 0; i < strItems.length; i++) {
var pairs = strItems[i].split(",");
objItems.push({
id: pairs[0].split(':')[1],
price: parseInt(pairs[1].split(':')[1])
});
}
Before calling JSON.stringify to get the result you're after:
var json = JSON.stringify(objItems);
console.log(json);
JSON.stringify(array) only does on layer, but you can change the stringify function to work for multiple layers with this function written by JVE999 on this post:
(function(){
// Convert array to object
var convArrToObj = function(array){
var thisEleObj = new Object();
if(typeof array == "object"){
for(var i in array){
var thisEle = convArrToObj(array[i]);
thisEleObj[i] = thisEle;
}
}else {
thisEleObj = array;
}
return thisEleObj;
};
var oldJSONStringify = JSON.stringify;
JSON.stringify = function(input){
if(oldJSONStringify(input) == '[]')
return oldJSONStringify(convArrToObj(input));
else
return oldJSONStringify(input);
};
})();
Once you have declared this, then you can call JSON.stringify(array)
Trying to get API data.
I have problem with creating valid JSON after modification.
Data should looks like this: [{"1"},{"2"},{"3"}, ... ,{201},{202},{203}, ...]
but now: [{"1"},{"2"},{"3"}, ...],[{"201"},{"202"},{"203"}, ...]
Where is my mistake?
var Promise = require("bluebird");
var request = require('bluebird').promisifyAll(require('request'));
var fs = Promise.promisifyAll(require('fs'));
var ladders = {"hardcore":"hardcore", "standard":"standard"};
function getJSONsync(urls) {
var ladder = [];
Promise.map(urls, function(url) {
return request
.getAsync(url)
.spread(function (res, body) {
if (res.statusCode != 200) {
throw new Error('Unsuccessful attempt. Code: '+ res.statusCode);
}
return JSON.stringify(ladder.concat(JSON.parse(body).entries), "", 4);
})
.catch(console.error);
},{ concurrency: 10 })
.then(function(arr) {
fs.writeFileAsync('file.json', arr);
})
}
function setUrls(ladderName, offset, limit) {
var arr = [];
while(offset < 15000 ) {
arr.push('http://api.pathofexile.com/ladders/'+ladderName+'?offset='+offset+'&limit='+limit);
offset = offset + 200;
}
return arr;
}
getJSONsync(setUrls(ladders.hardcore, 0, 200));
Thx for help.
Sorry for my Eng.
Finally:
var Promise = require("bluebird");
var request = require('bluebird').promisifyAll(require('request'));
var fs = Promise.promisifyAll(require('fs'));
var ladders = {"hardcore":"hardcore","standard":"standard"};
function getJSONsync(urls) {
Promise.map(urls, function(url) {
return request
.getAsync(url)
.spread(function (res, body) {
if (res.statusCode != 200) {
throw new Error('Unsuccessful attempt. Code: '+ res.statusCode);
}
return JSON.parse(body).entries;
})
.catch(console.error);
},{ concurrency: 10 })
.reduce(function(a, b) { return a.concat(b) })
.then(function(arr) {
fs.writeFileAsync('file.json', JSON.stringify(arr, "", 4));
console.log(arr.length);
})
}
function setUrls(ladder, offset, limit) {
var arr = [];
while(offset < 15000 ) {
arr.push('http://api.pathofexile.com/ladders/'+ladder+'?offset='+offset+'&limit='+limit);
offset = offset + 200;
}
return arr;
}
getJSONsync(setUrls(ladders.hardcore, 0, 200));
Promise.map returns an array, so when you do ladder.concat you return another array, so it becomes [[{"1"}], [{"1", "2"}]
You should just remove concat:
return JSON.stringify(JSON.parse(body).entries, "", 4);
But if you want to use variable ladder you may ladder.push(JSON.stringify(JSON.parse(body).entries, "", 4)) and use it instead of arr returned variable
I am trying to make a computed column on data returned via JSON. I cannot get it to work. I either get a NAN value or it says the column does not exist.
javascript:
function commissionsViewModel() {
var self = this;
self.commissions = ko.observableArray();
ko.applyBindings(self, $("#commissions").get(0));
function LoadcommissionsFromServer() {
$.post(
'/commissions/data',
function (data) {
var results = ko.observableArray();
ko.mapping.fromJS(data, {}, results);
for (var i = 0; i < results().length; i++) {
self.commissions.push(results()[i]);
};
},
'json'
)
}
LoadcommissionsFromServer();
self.ComissionAmount = ko.computed(
function () {
return this.CommissionableAmount * this.Rate * this.Modifier;
});
return self;
}
var viewModel = commissionsViewModel();
What I am trying to accomplish is for it to recalculate the CommissionAmount after I change the modifier or rate.
EDIT
If I manually map the fields I get the NaN
function Commission(data) {
this.Status = ko.observable(data.Status);
this.OriginalCommissionCode = ko.observable(data.OriginalCommissionCode);
this.NewCommissionCode = ko.observable(data.NewCommissionCode);
this.InvoiceNumber = ko.observable(data.InvoiceNumber);
this.CustomerID = ko.observable(data.CustomerID);
this.CommissionableAmount = ko.observable(data.CommissionableAmount);
this.Modifier = ko.observable(data.Modifier);
this.Rate = ko.observable(data.Rate);
this.SalesAmount = ko.observable(data.SalesAmount);
this.NonSalesAmount = ko.observable(data.NonSalesAmount);
this.CommissionAmount = ko.computed(function () {
return this.CommissionableAmount * this.Rate * this.Modifier;
});
}
function commissionsViewModel() {
var self = this;
self.commissions = ko.observableArray();
$.post(
'/commissions/data',
function (allData) {
var mappedTasks = $.map(allData, function (item) { return new Commission(item) });
self.commissions(mappedTasks);
},
'json'
);
}
ko.applyBindings(new commissionsViewModel());
I assume Rate and Modifier are observables (You didn't provide their declaration) so you need to use the this.Rate() and this.Modififer() notations. They are functions, not properties.