My JSON response looks like this :
{"sample":[{"id":"2","name":"branch name"},{"id":"3","name":"branch name 2"}]}
My function looks like this :
function getJSONObjects(){
$.getJSON("http://localhost/api/branches",
function(data){
$.each(data.sample, function(i,item){
var loc = "branch";
eval("var " + loc + item.id + "=123;");
alert(loc + item.id);
});
});
}
The idea is to create branch + id object so I can do something with it(create marker on a map), so I tried to assign it any value to see if this was working.
I wanted both branch2 and branch3 to alert 123 so I have something to start with. But currently this alerts branch2 and branch3 instead of 123.
I have little experience with creating dynamic variables/objects can someone tell me what I'm doing wrong or maybe another approach towards solving this?
No idea what you want to do here:
eval("var " + loc + item.id + "=123;"); // eval is EVIL
alert(loc + item.id); // just creates a string...
Creating dynamic variables is a bad idea. Rather create an object and use key/values.
var branches = {}; // new object, move this to the scope you want to access the value from later
branch[item.id] = 123; // set the key 'item.id' to the value '123'
console.log(branch[item.id]); // retrieve the value of the key 'item.id'
But if you're doing this you can just as well change the structure of your JSON data to something like this:
{"sample":[{"1": {"name": "branch name1", "value": 123}, "2": {"name": "branch name2", "value": 456}}]}
Then just grab the elements of the array and use them like branches above.
Try the following function to iterate data.sample:
function(i,item){
window[loc + item.id] = 123;
alert(window[loc + item.id]);
}
The window object here is used to set a global variable, "dynamically" named on runtime. (This is not a good practice, though.)
If loc = 'branch' and item.id = 2, the alert(window[loc + item.id]) statement would be equivalent to alert(branch2).
Related
I have declared a simple array in my JavaScript and I'm trying to push values from another array that has a dictionary inside it. But only the first value is getting pushed and not the rest of them.
<script>
complist = []
var testjs = [{'issuancedte': 'Finance', 'totalcomp': 1}, {'issuancedte': 'AnotherOne', 'totalcomp': 5}]
for (opt in testjs)
if ((adm_section_array.includes(testjs[opt].issuancedte)))
$('#data').append('<tr><td>' + testjs[opt].issuancedte + '</td><td>' + testjs[opt].totalcomp + '</td></tr>')
complist.push(testjs[opt].totalcomp);
</script>
So, from the code above I should be getting:
complist = [1, 5]
but instead I'm only getting:
complist = [1]
For some completely unknown reasons, if I place the .push line above the one where I'm appending data to a form, the complist is made as it should be but the table doesn't get appended.
This should be written like this,
if ((adm_section_array.includes(testjs[opt].issuancedte))) {
$('#data').append('<tr><td>' + testjs[opt].issuancedte + '</td><td>' + testjs[opt].totalcomp + '</td></tr>')
complist.push(testjs[opt].totalcomp);
}
Notice the curly braces after if block.
I try to store a JSON object with informations in multiple languages. Im not even sure they way i did it is good, any suggestions are welcome.
My current problem ist, that i dont know how to access the first language without knowing what language it is.
var Data = {
"NameIntern": "Something intern",
"en": {
"Name": "Some name",
"ModuleOrder": "123,333,22" }
};
document.write(Data[1].Name);
I just want to access the second object, sometimes its "en", sometimes its "de".
Thanks for any tipps!
Here is a pure javascript solution:
First: You get the keys of the object:
var keys = Object.keys(Data);
Then: The keys are stored in a array. You can access them with an index. Like:
Data[keys[0]]
Now: You can use a foor loop or whatever you want :)
Data is an object its not array so you cant access it like Data[0] you can access it like Data.en.
but as you say you dont know any thing about en or de so i suggest that you form the Data object like this :
var Data =[{
lang:"en",
langData:{
Name:"Some name"
}
}]
var Data = {
"NameIntern": "Something intern",
"en": {
"Name": "Some name",
"ModuleOrder": "123,333,22" }
};
var index = 0;
$.each(Data, function(key, val){
index += 1;
if (index == 2){
// key is the language, like in this example key is 'en'
console.log(key);
}
});
var name = (Data.en || Data.de || {})['Name'];
(Data.en || Data.de || {}) get's value of Data.en or Data.de if both doesn't exist, return empty object, so that script doesn't throw exception for Name property
()['Name'] same as myObject['Name'], myObject.Name
assign value to name variable, it will be Some name or undefined at least
If you have more languages, add them all, notice: it will return first found lang
var name = (Data.en || Data.de || Data.ru || Data.fr || {})['Name'];
Use Object.keys method to get list of object property names:
console.log(Data[Object.keys(Data)[1]]['Name']); // "Some name"
Related Retrieve two lists, sort and compare values, then display all the results
The question in the related post was how to combine two lists and sort them. The code referenced each item on each list. So, when I got the result, I could manipulate it.
The best solution used console.log(JSON.stringify(result,null,2)); to return the result, nicely combined and sorted.
Trouble for me is being able to translate that back into something I can work with. I can get the result into a variable and display it on the page, but it's the raw output : [ { "Title": "apple", "Type": "rome", "State": null }, ...
Have tried 'JSON.parse(result);' where result is the variable that is used to handle the combination and sorting of the two lists. All that gives is an invalid character error on the line. Also looked at the 'replace' option. That just confused me, tmi. Tried setting a variable directly on the result (so those who know are laughing) 'var foo = result;' That returns object, object.
The desired end result would be to end up with each item separate so I can put them in a table (or a list) on my html page with blanks in any column where there is no data.
I know there has to be a simple, easy way to do this without 200 lines of transformation code. But I can't find a clear example. Everything I'm seeing is for +experts or uses a super simple array that's typed into the code.
Is there a way to attach something like this (from my original) to the result instead of using JSON.stringify? What other step(s) am I missing in being able to extract the fields from JSON.stringify using JSON.parse?
}).success(function (data) {
var title = '';
var type = '';
$.each(data.d.results,
function (key, value) {
title += "Title: " + value.Title + "<br/>";
type += "Type: " + value.Type + "<br/>";
});
$("#tdtitle").html(title);
$("#tdtype").html(type);
Terry, you wrote: "All that gives is an invalid character error on the line"? Then result is not a valid json. Test it here: http://jsonlint.com/, fix it, then try again.
var data = {
d:{
results: [
{ "Title": "apple", "Type": "rome", "State": null },
{ "Title": "grape", "Type": "fruit", "State": null }
]
}
};
var title = '';
var type = '';
$.each(data.d.results, function (index, value) {
title += "Title: " + value.Title + "<br/>";
type += "Type: " + value.Type + "<br/>";
});
alert(title + type);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
I hope my question is not as stupid as I think it is...
I want to extract (the value of) a single variable from an JSONarray. I have this jquery code
$(document).ready(function(){
$("#gb_form").submit(function(e){
e.preventDefault();
$.post("guestbook1.php",$("#gb_form").serialize(),function(data){
if(data !== false) {
var entry = data;
$('.entries').prepend(entry);
}
});
});
});
the content of data looks like this ("MyMessage" and "MyName" are values written in a simple form from user):
[{"message":"MyMessage","name":"MyName"}]
the var "entry" should give (more or less) following output at the end:
"Send from -MyName- : -MyMessage-"
I'm not able to extract the single array values from data. I tried things like that:
var message = data['message'];
var name = data['name']
var entry = "Send from" + name + ":" +message;
but that gives "Send from undefined: undefined"
Hope you can help me with that.
you can do like this to get first item of array:
var msg = "Send from"+data[0].name + " "+data[0].message;
console.log(msg );
SAMPLE FIDDLE
UPDATE:
as you are using $.post you will need to explicitly parse response as json:
$.post("guestbook1.php",$("#gb_form").serialize(),function(data){
var response = jQuery.parseJSON(data);
var msg = "Send from"+response [0].name + " "+response [0].message;
console.log(msg );
});
To access an array you use the [] notation
To access an object you use the . notation
So in case of [{JSON_OBJECT}, {JSON_OBJECT}]
if we have the above array of JSON objects in a variable called data, you will first need to access a particular Json Object in the array:
data[0] // First JSON Object in array
data[1] // Second JSON Object in array.. and so on
Then to access the properties of the JSON Object we need to do it like so:
data[0].name // Will return the value of the `name` property from the first JSON Object inside the data array
data[1].name // Will return the value of the `name` property from the second JSON Object inside the data array
I have created a var and passed JSON data(comma seperated values) to it, but when I want to display json data - it only returns null. Here's the code:
<script type="text/javascript">
var data1 = [
{order:"145",country:"Dubai",employee:"permanent",customer:"self"}
];
document.write(data1);
</script>
You can either do it like this:
var data1 = [{order:"145",country:"Dubai",employee:"permanent",customer:"self"} ];
data1.forEach(function(data){
document.write(data.order);
document.write(data.country);
document.write(data.employee);
document.write(data.customer);
});
or you can do it like this
var data1 = [
{order:"145",country:"Dubai",employee:"permanent",customer:"self"}
];
$.each(data1[0], function(key, value){
document.write(key + " " + value);
});
Either way, storing just one object in the list makes this answer a bit redundant unless I show you how to loop over multiple objects.
var data1 = [
{order:"145",country:"Dubai",employee:"permanent",customer:"self"},
{order:"212",country:"Abu-Dhabi",employee:"permanent",customer:"Tom"}
];
data1.forEach(function(data){
$.each(data, function(key, value){
document.write(key+" "+value);
});
});
I'm using a mix of jQuery here aswell, which might not be optimal but atleast it serves to show that there are multiple ways to accomplishing what you need.
Also, the forEach() method on arrays is a MDN developed method so it might not be crossbrowser compliant, just a heads up!
If you want pure JS this is one of the ways to go
var data1 = [
{order:"145",country:"Dubai",employee:"permanent",customer:"self"},
{order:"212",country:"Abu-Dhabi",employee:"permanent",customer:"Tom"}
];
for(json in data1){
for(objs in data1[json]){
document.write(objs + " : " + data1[json][objs]);
}
}
For simple and quick printing of JSON, one can do something like below and pretty much same goes for objects as well;
var json = {
"title" : "something",
"status" : true,
"socialMedia": [{
"facebook": 'http://facebook.com/something'
}, {
"twitter": 'http://twitter.com/something'
}, {
"flickr": 'http://flickr.com/something'
}, {
"youtube": 'http://youtube.com/something'
}]
};
and now to print on screen, a simple for in loop is enough, but please not e, it won't print array instead will print [object Object]. for simplicity of answer, i won't go in deep to print arrays key and value in screen.
Hope that this will be usefull for someone. Cheers!
for(var i in json) {
document.writeln('<strong>' + i + '</strong>' +json[i] + '<br>');
console.log(i + ' ' + json[i])
}