sorry for my bad english
i am working in javascript and i have build an array i want to enter values in this array.
var attribute_sets = [];
$('.attribute_set :selected').each(function(i, selected){
attribute_sets[i]['id'] = $(selected).val(); // getting id
attribute_sets[i]['name'] = $(selected).text(); // getting name
});
Its giving me error
TypeError: attribute_sets[i] is undefined
also tried this one
attribute_sets[i]['id'].push($wk_jq(selected).val());
still getting same error
can any one please guide me how can i insert values in this JS array.
i want output like this
array
[0]
'id':'1',
'name':'abc'
[1]
'id':'2',
'name':'xyz'
try
$('.attribute_set :selected').each(function(i, selected){
attribute_sets.push({
id: $(selected).val(), // getting id
name: $(selected).text() // getting name
});
Use map() function.
attribute_sets = $('.attribute_set :selected').map(function(i, selected){
return {
'id' : $(this).val(),
'name' : $(this).text(),
}
}).get();
Related
Here is my data array and I want to delete by key CSH4870543427
var object = {};
object ={
0:{id:'CSH4870543427',actual_selling_price: "7.27"},
1:{id:'CSH4002543427',actual_selling_price: "7.30"}
};
var dataArray = [];
$.each(object,function(index, entry){
dataArray[entry.id] = entry;
});
How Can I delete data using key ?
Here is my code
var item = "CSH4870543427";
var index = dataArray.indexOf(item);
dataArray.splice(index, 1);
Above code not working
Ok. first your dataArray is not a valid array, you can't even run this code without getting an error:
Uncaught SyntaxError: Unexpected token ':'
so first fix your dataArray, then you can use something like.
dataArray.map((data) => delete data[key]);
Update
just use
delete dataArray['CSH4870543427']
delete dataArray[CSH4870543427]
will delete the specified key from your object. if you were trying to say the dataArray is an object like this.
var dataArray = {CSH4870543427: {actual_selling_price: "7.27"}, CSH4002543427: {actual_selling_price: "75.95"}, INV1355743427: {actual_selling_price: "5.95"}}
I don't know what's wrong with the code. it works fine and both array have data. but i don't understand why the output found undefined from var _city array as it passed data to the city field.
How can I fix this?
var city = {
_country : _city
};
I'm wondering what you read that made you possibly believe that by writing what you did you would magically have an object keyed with one array with values from a second...
Essentially what is happening when you did when you
var city = {
_country : _city
};
is create an object that looks like
var city = {
'_country' : ['your', 'array', 'of', 'cities']
};
that is to say, an object with one key, '_country' mapped to an array of cities.
This explains why you get undefined... city['any string that isn't exactly " _country"'] == undefined
What you want to do is more likely,
var city = _country.reduce(function(acc, cur, idx) { acc[cur] = _city[idx]; return acc; }, {});
It's because _country is already defined above:
var _country = ["Afghanistan","Bahrain","Canada","Denmark","Ethiopia","France","Germany","Hong Kong","India","Japan"];
Change the definition within city to something else (maybe country):
var city = {
country: _city,
};
And it'll work.
I am new in coding JavaScript. So far I know how to set and get values from a multi array, but with this one I cannot find the right way to do it.
I am trying to get the email value from this array:
__arr.push(['id' ,'12541']);
__arr.push(['tag', {"sub":false,"email":"email#email.com"}]);
I tried
JSON.parse(__ar.tag.email)
document.write(__ar[2][2])
Everything I tried so far I got either undefined or tag[object, object].
What's the easiest way to get it?
The email property is located on the second element of the array (that is index 1 of the zero based indexed array). So, to access it, you also need to access the second object of the element (again index 1) and then .email is at your hand:
document.write(__arr[1][1].email);
Assuming that you only push those two values, your array looks like the following:
[
['id' ,'12541'],
['tag', {"sub":false,"email":"email#email.com"}]
]
Means, that when you access it using __arr.tag.email will result in an undefined error, because it's an array not an object.
Therefore what you could do is, if you don't know exactly the index:
var __arr = [];
__arr.push(['id' ,'12541']);
__arr.push(['tag', {"sub":false,"email":"email#email.com"}]);
for (var i = 0; i < __arr.length; i++){
if(__arr[i][0] === 'tag'){
console.log(__arr[i][1].email);
break;
}
}
so you have an array as __arr, the first element you are pushing is id which is an array second array is having your email id.
so you can access as shown below.
I hope this will solve your issue
var __arr = [];
__arr.push(['id' ,'12541']);
__arr.push(['tag', {"sub":false,"email":"email#email.com"}]);
console.log("email id =>", __arr[1][1].email)
I hope you know array is starting from its index that's base value is 0. in your code there is no such element which is available in index 2.
document.write(__ar[2][2]) //
I know lots of answer is given here, but i just want to tell you even you are pushing value in "__arr" i.e an array of array. so every element is storing in its index value.
var __arr = [];
__arr.push(['id' ,'12541']);
__arr.push(['tag', {"sub":false,"email":"email#email.com"}]);
console.log(__arr[0]) //return you ["id", "12541"]
console.log(__arr[1]) //return you ["tag", {sub: false, email: "email#email.com"}]
again you can see inside of your "__arr" there is a an array element
console.log(__arr[0][0]) //return you "id"
console.log(__arr[0][1]) //return you "12541"
console.log(__arr[1][0]) //return you "tag"
console.log(__arr[1][1]) //return you {sub: false, email: "email#email.com"}
and here what you want i.e.
console.log(__arr[1][1].sub) //return you false
console.log(__arr[1][1].email) //return you "email#email.com"
A dynamic way to do it (with level of 2 nested levels).
Basically, I used two nested loops and aggregated the emails into a list.
let __arr = []
__arr.push(['id' ,'12541']);
__arr.push(['tag', {"sub":false,"email":"email#email.com"}]);
__arr.push(['tag2', {"sub":false,"email":"2222#email.com"}]);
const emails = __arr.reduce((res, items) => {
items.forEach(elem => {
if (elem.email) res.push(elem.email)
})
return res
},[])
console.log(emails)
// [ 'email#email.com', '2222#email.com' ]
So I have an empty array defined.
admin.links = [];
I then push items to it like so.
angular.forEach(links, function(value, key) {
var title = value.title;
var url = value.url;
admin.links.counter.push({
'parent' : counter,
'name' : title,
'url' : url
})
})
When I run the code above I get an error
Cannot read property 'push' of undefined
counter is a dynamic value. How would I do this?
I want it to be something like admin.links.0
What you mean with:
counter is a dynamic value.
admin.linksis an array, so if you want to add items you must use:
admin.links.push
if, instead, you want links to be an object you should initialize it with:
admin.links = {
counter: []
}
admin.links.counter.push()
I know there are 1 million and 1 questions on this, but I cannot seem to find an answer.
I am receiving data via PHP as such
echo json_encode($result);
From a typical MYSQL query.
I get the result back like this in the console.
[{"id" : "1", "name" : "bob"}]
I am trying to use $.each to iterate through this so I can process my results but I only get errors, undefineds or 0[object Object].. things like that.
My goal is to append each value to a input box (retrieving data from a table to put into an edit box).
$.post('getstuff.php', { id : id } function(data){
$.each(data), function(k,v){
$('input[name= k ]').val(v);
});
});
As you can see i was hoping it was as simple as a key=>value pair but apparantly not. I have tried parsing, stringifiying.. really I am lost at this point. I also cannot tell $.post that I am using JSON because I am using a more arbitrary function, but am just posting that as my example.
Edit
var retrievedData = JSON.parse(data);
$.each(retrievedData, function(k,v){
for (var property in retrievedData) {
if (retrievedData.hasOwnProperty(property)) {
console.log(k);
console.log(v);
console.log(property);
//$('input[name= k ]').val(v);
}
}
});
In your second code sample, retrievedData is an array, which you iterate using jQuery $each...
$.each(retrievedData, function(k, v) {
OK so far. But then you try to iterate retrievedData again like an object, which it isn't. This is why you are getting undefined messages in the console
for (var property in retrievedData) {
if (retrievedData.hasOwnProperty(property)) {
console.log(k);
console.log(v);
console.log(property);
//$('input[name= k ]').val(v);
}
}
On the inner loop you should be iterating v not retrievedData. On each pass of $each v will be an object.Try this:
$.each(retrievedData, function(k,v){
for (var key in v) {
if (v.hasOwnProperty(key)) {
console.log("key: " + key);
console.log("value: " + v[key]);
}
}
});
You should do some type checking that v is an object first and catch any errors.
Use either :
$.ajax({
'dataType' : 'json'
});
Or
$.getJSON
Or if you want to use $.post, just do in your success function :
var good_data = JSON.parse(data);
$.each(good_data, function(k,v) {
$('input[name= k ]').val(v);
});
Answering your question based on your comments on other answer.
My assumption is you are getting data as JSON,if not you need to parse it,for that you can use JSON.parse(string).
Here I'm using Underscore.js
var data=[{"id" : "1", "name" : "bob"}]
$(data).each(function(ind,obj){
var keys=_.keys(obj);
$(keys).each(function(i,ke){
console.log(ke)
console.log(obj[ke]);
})
});
Here is JSFiddle of working code
First you need to define you're expecting JSON in your POST request - http://api.jquery.com/jQuery.post/
Then you need to iterate through the response.
$.post('getstuff.php', { id : id } function(data){
//Assuming you get your response as [{"id" : "1", "name" : "bob"}], this is an array
//you need to iterate through it and get the object and then access the attributes in there
$.each(data), function(item){
$('input[name=' + item.name + ']').val(item.id);
});
}, 'json');
EDIT
If you want to iterate over the properties of the objects returned, you need to put another loop inside the $.each
for (var property in item) {
if (object.hasOwnProperty(property)) {
// do stuff
}
}
More about it here - Iterate through object properties
EDIT 2
To address the solution you've posted. You've used the wrong variable names. Here's a working fiddle - http://jsfiddle.net/EYsA5/
var $log = $('#log');
var data = '[{"id" : "1", "name" : "bob"}]'; //because we're parsing it in the next step
var retrievedData = JSON.parse(data);
for (var parentProp in retrievedData) { //this gets us each object in the array passed to us
if (retrievedData.hasOwnProperty(parentProp)) {
var item = retrievedData[parentProp];
for (var property in item) { //this gives us each property in each object
if (item.hasOwnProperty(property)) {
console.log(item[property]);
$log.prepend("<br>");
$log.prepend("Property name is - " + property);
$log.prepend("<br>");
$log.prepend("Value of property is - " + item[property]);
//do stuff
}
}
}
};