I have file in csv format:
info,value
"off to home","now"
"off to office","tomorrow"
I want json out of this using jquery but couldnt find any help.Isnt it possible to use jquery for this?
My intended output is :
{
"items": [
{
"info": "off to home",
"value": "now"
},
{
"info": "off to office",
"value": "tomorrow"
},
]
}
PFB the code which i implemented. but it is not working
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"></script>
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script src="csvjson.js"></script>
<script>
$.ajax("data.csv", {
success: function(data) {
var jsonobject = csvjson.csv2json(data);
alert(jsonobject);
},
error: function() {
alert("error")
}
});
</script>
</head>
<body>
</body>
</html>
Using jquery-csv, specifically the toObjects() method
$.ajax({
url: "data.csv",
async: false,
success: function (csvd) {
var items = $.csv.toObjects(csvd);
var jsonobject = JSON.stringify(items);
alert(jsonobject);
},
dataType: "text",
complete: function () {
// call a function on complete
}
});
Note: You'll need to import the jquery-csv library for this to work.
What this does is transform the CSV data into an array of objects.
Since the first line contains headers, jquery-csv knows to use those as the keys.
From there the data is transformed to JSON using stringify().
If you need a wrapper object, just create one and attach the data to it.
var wrapper = {};
wrapper.items = items;
alert(wrapper);
Disclaimer: I'm the author of jquery-csv
Useful link, I have found. Maybe help someone.
http://jsfiddle.net/sturtevant/AZFvQ/
function CSVToArray(strData, strDelimiter) {
// Check to see if the delimiter is defined. If not,
// then default to comma.
strDelimiter = (strDelimiter || ",");
// Create a regular expression to parse the CSV values.
var objPattern = new RegExp((
// Delimiters.
"(\\" + strDelimiter + "|\\r?\\n|\\r|^)" +
// Quoted fields.
"(?:\"([^\"]*(?:\"\"[^\"]*)*)\"|" +
// Standard fields.
"([^\"\\" + strDelimiter + "\\r\\n]*))"), "gi");
// Create an array to hold our data. Give the array
// a default empty first row.
var arrData = [[]];
// Create an array to hold our individual pattern
// matching groups.
var arrMatches = null;
// Keep looping over the regular expression matches
// until we can no longer find a match.
while (arrMatches = objPattern.exec(strData)) {
// Get the delimiter that was found.
var strMatchedDelimiter = arrMatches[1];
// Check to see if the given delimiter has a length
// (is not the start of string) and if it matches
// field delimiter. If id does not, then we know
// that this delimiter is a row delimiter.
if (strMatchedDelimiter.length && (strMatchedDelimiter != strDelimiter)) {
// Since we have reached a new row of data,
// add an empty row to our data array.
arrData.push([]);
}
// Now that we have our delimiter out of the way,
// let's check to see which kind of value we
// captured (quoted or unquoted).
if (arrMatches[2]) {
// We found a quoted value. When we capture
// this value, unescape any double quotes.
var strMatchedValue = arrMatches[2].replace(
new RegExp("\"\"", "g"), "\"");
} else {
// We found a non-quoted value.
var strMatchedValue = arrMatches[3];
}
// Now that we have our value string, let's add
// it to the data array.
arrData[arrData.length - 1].push(strMatchedValue);
}
// Return the parsed data.
return (arrData);
}
function CSV2JSON(csv) {
var array = CSVToArray(csv);
var objArray = [];
for (var i = 1; i < array.length; i++) {
objArray[i - 1] = {};
for (var k = 0; k < array[0].length && k < array[i].length; k++) {
var key = array[0][k];
objArray[i - 1][key] = array[i][k]
}
}
var json = JSON.stringify(objArray);
var str = json.replace(/},/g, "},\r\n");
return str;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
You can use Alasql library. Alasql can load the data file from server, parse it and put the result to array of JSON objects.
This is the code:
<script src="alasql.min.js"></script>
<script>
alasql('SELECT * FROM CSV("items.csv",{headers:true})',[],function(res){
var data = {items:res};
});
</script>
If you want to modify data (for example, use only one column or filter), you can do it "on the fly".
Alasql understands the headers and use them for SELECT statement:
alasql('SELECT info FROM CSV("items.csv") WHERE value = "now"',[],function(res){
console.log(res);
});
I think jquery csv plugin will be helpful to convert your CSV to an array, then you can use jquery json.
BTW, you can use $.get() to read your CSV file from server.
Related
I have some data i am pulling from a web service. This is the string
(Body:'3886' MessageProperties [headers={}, timestamp=null,
messageId=null, userId=null, receivedUserId=null, appId=null,
clusterId=null, type=null, correlationId=null,
correlationIdString=null, replyTo=null,
contentType=application/x-java-serialized-object,
contentEncoding=null, contentLength=0, deliveryMode=null,
receivedDeliveryMode=PERSISTENT, expiration=null, priority=0,
redelivered=false, receivedExchange=,
receivedRoutingKey=bottomlesspit, receivedDelay=null, deliveryTag=62,
messageCount=0, consumerTag=amq.ctag-sCwfLaMEqWp2GkFwFrY1yg,
consumerQueue=bottomlesspit])
It looks like json but the key value pairs are almost fine but the most important key which is Body isn't like other keys as the string would tell.
I need to read the value of Body and be able to get the value like this
console.log(d.body);
//This above outputs the string as shown
obj = eval('{' + d.body + '}');
console.log(obj);
var match = "Body";
var val = obj.find( function(item) { return item.key == match } );
console.log(val);
How can i read the value of the key Body?.
Use this regular expression instead of a match Body:
\bBody:'(\d*)'
This will catch the Body number in group 1.
You can write a parser function get string and extract values. A very simple function is here. You can modify it also for all exceptions exist.
var str = `(Body:'3886' MessageProperties [headers={}, timestamp=null, messageId=null, userId=null, receivedUserId=null, appId=null, clusterId=null, type=null, correlationId=null, correlationIdString=null, replyTo=null, contentType=application/x-java-serialized-object, contentEncoding=null, contentLength=0, deliveryMode=null, receivedDeliveryMode=PERSISTENT, expiration=null, priority=0, redelivered=false, receivedExchange=, receivedRoutingKey=bottomlesspit, receivedDelay=null, deliveryTag=62, messageCount=0, consumerTag=amq.ctag-sCwfLaMEqWp2GkFwFrY1yg, consumerQueue=bottomlesspit])`;
function f(inp) {
var index = str.indexOf(inp),
endIndex;
for(var i = index; i < str.length; i ++) {
if(str[i] == ',') {
endIndex = i;
break;
}
}
var output = str.substr(index, endIndex).split('=');
return output;
}
console.log(f('consumerQueue'));
Why not use a regex to match and extract the Body.
Example:
const match = d.body.match(/Body:\'(.+)\'/)
if (match) {
const body = match[1] // This is the value of Body
} else {
// Unable to find Body, handle it here
}
I am beginner in Angular and TS.
I want to get array of integer like [1,2,3,4] , but jasper server gives an output as string "[1,2,3,4]".
So how I change it using Type Script.
Data :
[
{
LABEL:'CR FAILURE MESSAGES',
DATASET:'[3,3,10,15,21,35,35,81]'
},
{
LABEL:'CR SUCCESS MESSAGES',
DATASET:'[1,4,31,34,63,78,219,312,1076]'
},
{
LABEL:'CR TOTAL MESSAGES',
DATASET:'[4,7,55,66,93,98,300,312,1086]'
},
{
LABEL:'PR FAILURE MESSAGES',
DATASET:'[2,5,6,12,18,19,23,48]'
},
{
LABEL:'PR SUCCESS MESSAGES',
DATASET:'[4,5,10,22,32,65,101,139]'
}
]
You can use JSON.parse to do this for you.
let obj = {
"LABEL":"CR FAILURE MESSAGES",
"DATASET":"[3,3,10,13,21,35,35,81]"
};
let datasetArray = JSON.parse(obj.DATASET); // Generates the array
console.log(datasetArray);
Is there a reason why you get an array wrapped in a string? If the server just returned a stringified JSON object, I would expect that calling JSON.parse on the whole thing would just build the array inline with the rest of the object.
Here's my solution
You can remove the first and the last characters to get "1,2,3,4" and then use split in order to turn it into array
The code is well commented take your time to understand it line by line;
var input = "[3,3,10,13,21,35,35,81]"
console.log(input)
//cleaning the input
var cinput = input.substr(1).slice(0, -1);
console.log(cinput)
//using split to turn it into an array by using the ',' as seperator
var output = cinput.split(',')
//the result
console.log(output)
var parsedarray = []
//to parse each array element to int
for (var i = 0, len = output.length; i < len; i++) {
parsedarray[i] = parseInt(output[i]);
}
//parsed numbers inside the array
console.log(parsedarray)
I have a csv file which has the following data format:
2001:200::,2001:200:ffff:ffff:ffff:ffff:ffff:ffff,
42540528726795050063891204319802818560,42540528806023212578155541913346768895,JP,,,36.0000,138.0000,,0,0
2001:208::,2001:208:ffff:ffff:ffff:ffff:ffff:ffff,
42540529360620350178005905068154421248,42540529439848512692270242661698371583,SG,,,1.3667,103.8000,,0,0
I want to only parse the item after the 1st comma (IPv6 address), and the lat/long (36.0000,138.0000 in the first record) values for this record.
How can I use JavaScript/ jQuery to do this?
Use the split method to turn the string into an array and then iterate thru it as you wish.
var csv = "2001:200::,2001:200:ffff:ffff:ffff:ffff:ffff:ffff,4254052872679505006389120431980\n2818560,42540528806023212578155541913346768895,JP,,,36.0000,138.0000,,0,0";
var myArray = csv.split("\n");//You should know what kind of new line your csv is using
myArray.map(function (e) { //Applies this function over each element of myArray that is each line of your csv
var line = e.split(","); //Turn the comma separated string into an array
return "The second element is: " + line[1]; //Do what you need
});
Well the same way you would in any language. First you open the file. Read it line by line. Split each line on the comma. Use the index of the array to get the value you want.
jQuery.get('file.csv', function(data) {
alert(data); // this is a line
var tempArray = data.split(','); // array of data
for(var i = 0; i < tempArray.length; i++)
{
console.log(tempArray[i]); // probably index 1 is your IPv6 address.
}
});
Or just use CSV libraries, I'd suggest PapaParse(Browser) or BabyParse(NodeJS)
Here's what you do :
$.ajax({
type: "GET",
url: "data.csv",
success: function (data) {
var data = Papa.parse(data);
var output = {
"IPv6" : data.data[0][1],
"coordinates" : [data.data[1][5], data.data[1][6]]
} /* -> These are the values you're looking for! */
}
});
Because I can't demo the AJAX (due to cross-domain scripting issues), I'll demo just the success function below!
Demo
var data = '2001:200::,2001:200:ffff:ffff:ffff:ffff:ffff:ffff,'+ "\n" +
'42540528726795050063891204319802818560,42540528806023212578155541913346768895,JP,,,36.0000,138.0000,,0,0'+ "\n\n" +
'2001:208::,2001:208:ffff:ffff:ffff:ffff:ffff:ffff,'+ "\n" +
'42540529360620350178005905068154421248,42540529439848512692270242661698371583,SG,,,1.3667,103.8000,,0,0';
var success = function (data) {
var data = Papa.parse(data);
return output = {
"IPv6" : data.data[0][1],
"coordinates" : [data.data[1][5], data.data[1][6]]
}
}
document.body.innerHTML = '<pre>' + JSON.stringify(success(data), null, 2) + '</pre>';
<script src="https://cdnjs.cloudflare.com/ajax/libs/PapaParse/4.1.2/papaparse.js"></script>
I need to test all the words entered into an input against 3 objects and determine which array they belong to so I can output a URL to an API.
I want to achieve this with Javascript/jQuery.
For example if the input had these words: keyword1 keyword2 keyword3 keyword5
All keyword entries will be added from a autocomplete plugin.
I then need to test them against 3 arrays.
var array1 = ["keyword2", "keyword6"];
var array2 = ["keyword3", "keyword4"];
var array3 = ["keyword1", "keyword5"];
I need to determine what array they came from so I can output a URL and add the values to specific keys in a URL.
Example:
domain.com/api?array1= [insert keyword(s)] &array2= [insert keyword(s)] &array3= [insert keyword(s)]
The keywords need to be sent as an array and must have spaces replaced with dashes.
I am using jQuery to perform a GET request with the URL generated.
You can make the code shorter by creating an array of arrays but this works
var input = "keyword1 keyword2 keyword3 keyword5".split(" ");
var array1 = ["keyword2", "keyword6"];
var array2 = ["keyword3", "keyword4"];
var array3 = ["keyword1", "keyword5"];
var arr1=[],arr2=[],arr3=[];
$.each(input,function(_,keyword) {
if ($.inArray(keyword,array1) !=-1) arr1.push(keyword);
if ($.inArray(keyword,array2) !=-1) arr2.push(keyword);
if ($.inArray(keyword,array3) !=-1) arr3.push(keyword);
});
var url = "domain.com/api/?",keywords="";
if (arr1.length>0) keywords += "&array1="+arr1.join(",");
if (arr2.length>0) keywords += "&array2="+arr2.join(",");
if (arr3.length>0) keywords += "&array3="+arr3.join(",");
if (keywords.length>0) url += keywords.substring(1).replace(/ /g,"-");
console.log(url)
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
You can put all the array objects into a parent array and then loop it
var parentArray = [
["keyword2", "keyword6"],
["keyword3", "keyword4"],
["keyword1", "keyword5"]
]
$.each(parentArray,function(key,value){
//here you can check
$.each(value,function(key1,value1){
if('your key word') == value1{
// then the array you are looking for would be "key" of that particular loop
}
});
});
EDIT: Now, this should definitely work
Here's a vanilla JS version:
var words = 'keyword1 keyword2 keyword3 keyword5';
// first create an object that contains your arrays
var dict = {
array1: ["keyword2", "keyword6"],
array2: ["keyword3", "keyword4"],
array3: ["keyword1", "keyword5"]
}
// start building up a new object that mirrors the existing one
// but that only contains those keywords that are in the input string
function buildURLObj(dict, words) {
var out = {};
// split the keywords string into an array
words = words.split(' ');
// loop over the object
for (var p in dict) {
out[p] = [];
// loop over the array of keywords
for (var i = 0, l = words.length; i < l; i++) {
// if the keyword in the array, push it to the
// temporary object
if (dict[p].indexOf(words[i]) > -1) {
out[p].push(words[i]);
}
}
}
// return the completed URL using createURL
return createURL(out);
}
// create a URL from the new object
function createURL(arr) {
var url = [];
for (var p in arr) {
// if the array is not empty, don't add it to the completed URL
// otherwise start building up the URL string
if [arr[p].length) {
var subURL = [];
subURL.push(p);
subURL.push('[' + arr[p].join('-') + ']');
url.push(subURL.join('='));
}
}
// return the completed URL
return url.join('&');
}
// "array1=[keyword2]&array2=[keyword3]&array3=[keyword1-keyword5]"
buildURL(dict, words);
DEMO
I am currently trying to parse parameters from a path to a JavaScript file (inside a script tag). At the moment I know which parameters I expect to be there but instead of looking for the expected params I would rather like to just extract all params given.
Example of the script tag which includes a JavaScript file:
<script type="text/javascript" src="https://url/widget.js?param1=A¶m2=bb></script>
At the moment I'm just doing this (seperately for each parameter):
jQuery('script').each(function() {
var script = this;
if (!script.src) {
return;
}
var matchKey = script.match(/https\:\/\/url\/widget\.js\?param1=([A-Z]+)/);
if (matchKey) {
oSettings.param1 = matchKey[1];
}
}
So what I need is a regex that extracts both the name of the parameter and the value from the included sript.
Thanks for the assistance!
This tested function works:
function parse_query_vars(text)
{ // Extract name=value pairs from URL query string.
// Empty object to store name, value pairs.
var qvars = {},
// Capture non-empty query string in $1.
re_q = /\?([^#]+)/, // From '?' up to '#' or EOS.
// Capture variable name in $1 and value in $2.
re_nv = /([^=]+)=([^&]*)(?:&(amp;)?|$)/gi,
// Match array for query string and va=val pairs.
m = text.match(re_q),
// Query string plucked from URL
q = '';
// If there is a query string, copy to q var.
if (m) q = m[1];
while (m = re_nv.exec(q)) {
qvars[m[1]] = m[2];
}
return qvars; // Return results in object
}
It first extracts any query string from the URL, then iteratively parses out name=value pairs and returns the results in an object. It handles name value pairs separated by either & or & and works if the URL has a #fragment following the query.
Use something like this, or this, or this.
They're not all regex solutions, but then you don't necessarily need a regex. That was a detail that could probably have been left out of the question.
Hope that helps.
(This isn't actually tested)
var scripts = document.getElementsByTagName("script"), i = scripts.length;
var reMatch = /https\:\/\/url\/widget\.js/, path;
// find the correct script
do {
path = scripts[i--].src;
}
while (!reMatch.test(path));
var map = {}, pairs = path.substring(path.indexOf("?") + 1).split("&"), atoms;
i = pairs.length;
// extract the name-value pairs
while (i--) {
atoms = pairs[i].split("=");
map[decodeURIComponent(atoms[0])] = decodeURIComponent(atoms[1]);
}