We Keep Coding

Regex: how to deal with brackets and back slashes? Example: make "[{\ into [{

I am converting a csv file into JSON, and the converter adds " at the beginning of lines, and also adds a \ to quotes.
So, if my CSV file has an array like
"items": [{"name":"item 1"...
the resulting JSON from the converter is:
"items": "[{\"name\":\"item 1\"...
I need the JSON to look like the original CSV entry.
So, how do I change "[{ to [{ ?
Note: I can't just remove quotes everywhere, as they are correct in certain spots. So I need to just remove quotes when they are followed by these specific characters, so only remove "[{
And how do I remove the \ everywhere they appear?
EDIT
Some of the comments and answers have mentioned maybe there is a better way to convert the CSV into a JSON file. In my case, I have data in excel that I need to ultimately be readable by a Lambda function, so I expect I need a way to convert excel to JSON. I have posted a separate question asking for assistance on that topic here .

First of all you should try to generate the correct json format, so that you don't have to go through this issue at all.
However if you have no control over the output of the json data that you're getting, you can simply remove the \" parts by using this regexp:
your_json_var.toString().replace(/\"/g,'');
Where your_json_var contains the returned data.
your_json_var = '"items": "[{\"name\":\"item 1\"...';
var new_var = your_json_var.toString().replace(/\"/g,'');
console.log(new_var);

You could do this
Let stringJson=JSON.stringify(myjson)
Let clearJson = JSON.parse(stringJson.replace(/\"[{/g, '[{').replace(/\/g,'')

NodeJS escaping back slash

I am facing some issues with escaping of back slash, below is the code snippet I have tried. Issues is how to assign a variable with escaped slash to another variable.
var s = 'domain\\username';
var options = {
user : ''
};
options.user = s;
console.log(s); // Output : domain\username - CORRECT
console.log(options); // Output : { user: 'domain\\username' } - WRONG
Why when I am printing options object both slashes are coming?
I had feeling that I am doing something really/badly wrong here, which may be basics.
Update:
When I am using this object options the value is passing as it is (with double slashes), and I am using this with my SOAP services, and getting 401 error due to invalid user property value.
But when I tried the same with PHP code using same user value its giving proper response, in PHP also we are escaping the value with two slashes.

When you console.log() an object, it is first converted to string using util.inspect(). util.inspect() formats string property values as literals (much like if you were to JSON.stringify(s)) to more easily/accurately display strings (that may contain control characters such as \n). In doing so, it has to escape certain characters in strings so that they are valid Javascript strings, which is why you see the backslash escaped as it is in your code.

The output is correct.
When you set the variable, the escaped backslash is interpreted into a single codepoint.
However, options is an object which, when logged, appears as a JSON blob. The backslash is re-escaped at this point, as this is the only way the backslash can appear validly as a string value within the JSON output.
If you re-read the JSON output from console.log(options) into javascript (using JSON.parse() or similar) and then output the user key, only one backslash will show.
(Following question edit:)
It is possible that for your data to be accepted by the SOAP consuming service, the data needs to be explicitly escaped in-band. In this case, you will need to double-escape it when assigning the value:
var s = 'domain\\\\user'
To definitively determine whether you need to do this or not, I'd suggest you put a proxy between your working PHP app and the SOAP app, and inspect the traffic.

How to remove unwanted encoding symbols in json

I have json on my page coming from the string property of the model:
var myJson = '[{\"A\":1,\"B\":10,\"C\":\"214.53599548339844\",\"D\":\"72.52798461914062\"},
{\"A\":1,\"B\":11,\"C\":\"214.53599548339844\",\"D\":\"72.52798461914062\"}]'
I want to process that json via javascript on the page
I am doing $.parseJSON(#Html.Raw(Json.Encode(myJason))); but json still contain \" symbol. If i do $.parseJSON(#Html.Raw(Json.Decode(myJason))); it is just producing an $.parseJSON(System.Web.Helpers.DynamicJsonArray); How can I fix that?

Take your JSON and .stringify() it. Then use the .replace() method and replace all occurrences of ("\").
var myString = JSON.stringify(myJson);
var myNewString = myString.replace(/\\/g, "");
Hope this helps.

There are two ways
1 from where you get the JSON asked them to send you as url encoded format. at your end you need to decode url and you will get the Perfect JSON.
Other wise do the laborious replace method for each and every special charecter with respective char.
like above example you need to use replace("\","");

There is no JSON parser that will be able to deal with a JSON string that isn't properly formatted in the first place.
so you need to make sure that your theModel is formatted appropriately and according JSON.org standards.
Like
Koushik say you can use String operation

How can I convert a large list of numbers into JavaScript array format?

I have this large list of numbers: http://www.codeshare.io/MGpQ4, that I would like to convert into a JavaScript array format, so that I can check if a certain number in a function matches one of the numbers in that repsective array. Is there any tool I can use to convert all these numbers into a JS array format?

try to split this list. You need to add something like coma or space at the end of your lines.
string.split(/* your delimetter */);
string here is your list in vaid JS format.
If you show real code, i could answer better.

There are many ways to do this, but basically the idea is to replace line breaks by ,. Any IDE that supports regex replacement will allow you to do this easily. You can also use virtually any programming language and use the same approach.
Here's your array literal:
[11450,3082,163222,57748,176966,163225,18786,163224,175522,175523,176967,176968,163226,147285,139762,147317,57793,57784,147324,147333,147336,163220,147337,147338,147339,147340,147341,147342,147343,147192,163175,163351,57847,147202,147211,147214,147215,147284,147216,152398,147218,147219,147220,147221,163397,163424,163425,163399,163427,163400,57749,163401,163402,57875,1070,171146,11452,77475,51933,156790,51920,15615,84544,153564,99754,51946,57916,51919,175521,51973,28016,176957,15620,1067,57929,57881,57882,57883,57885,57884,175524,122321,131411,122320,57886,175525,57887,122322,156789,3075,11462,51581,77411,175528,152719,51580,156801,51568,15648,51583,152553,99735,153797,51582,152554,51567,175529,51586,28017,15652,51587,57974,15628,57917,57918,57919,57920,15630,175526,175527,15629,57927,150956,122340,122341,122342,15633,11467,155198,175658,155201,175654,175655,175656,175697,175657,155200,175653,155199,175652,155203,155202,175640,163147,175648,90635,80913,80914,52762,53369,86207,175649,19255,175650,163129,125474,175651,125473,163130,125475,163131,163132,155344,175641,175642,175643,155345,155346,175644,175645,175646,155348,163148,155349,116724,175647,155347,155350,155351,82161,163149,155240,155241,155242,155243,163141,155244,155245,163142,163143,112424,163144,163145,155246,155247,155248,155249,155250,155251,155252,155253,163146,155254,112425,175638,152360,152361,152362,152363,163139,152364,152365,152366,163140,150666,152367,152368,152369,112428,172007,152345,152352,163137,152353,152354,152355,163138,152356,152357,152358,152359,112426,175639,150663,152340,152341,150664,152342,153004,4250,52357,86647,2993,152537,177649,2994,175626,167902,52365,169271,105860,105408,163582,163584,169272,52373,163583,15665,52382,179239,79720,179194,179240,179241,179242,105387,15662,90634,2996,106113,175627,1060,1059,57990,57991,15687,137084,3002,57988,11483,57989,15689,11510,11511,3001,11484,155183,15690,11507,15691,84434,313,93427,15709,11498,24087,53120,11501,11504,11505,63850,28015,175628,178962,163526,175629,105417,163525,105418,105419,105422,105440,105432,105444,16119,175630,163528,155184,155185,163537,163542,155187,177650,169277,169278,163543,169279,169280,169281,169282,178963,163549,169284,163550,166695,179243,155189,179195,179244,179245,179246,155190,169283,169276,155191,155192,166696,155195,166697,155194,155193,155197,155196,167905,3259,15720,105471,106127,163556,163552,163553,15718,98735,163560,163551,98745,175631,105516,15719,105472,106128,175633,131474,131476,105508,105509,105511,105512,105514,105515,148486,114293,105520,3263,175632,1265,4251,163573,3003,177651,168998,105559,45220,167906,45230,169285,105544,169286,169287,169288,169289,45237,15735,45238,150955,179247,45246,179196,179248,179249,179250,151486,105569,45258,175634,175635,175636,175637,163581,106129,15738,1063,15724,137085,63862,63861,11524,163587,11525,163588,11527,11523,11514,63853,163593,11521,11522,163586,63854,11530,63855,11532,45279,15746,4844,11554,3009,169001,172378,63856,11534,11535,53447,46809,15751,11517,15752,15755,15753,167903,117769,63857,15747,11536,117771,108898,11538,155206,15748,63859,63858,15754,1264,63863,11555,63864,63865,63866,155226,63867,63869,53159,15775,84275,314,169291,63852,169292,169293,169295,80600,169296,169298,169302,42526,163570,169303,3034,95672,53557,45333,55793,53548,62107,11632,63889,175759,175760,163600,163601,163602,163603,163604,163605,20287,11681,163606,163607,175805,20288,175806,74962,74963,74964,74965,74966,74967,74968,167909,962,163608,163609,167910,163610,163611,167911,163612,163613,167912,163614,163615,163616,163617,4116,14062,163618,163619,163620,163621,163622,163623,163624,163625,163626,14065,175807,163627,48559,14070,1464,74969,74970,74971,74972,74973,74974,74975,167913,960,957,163594,163595,163596,163597,163598,163599,167908,20291,175761,52383,52384,167914,52385,52386,52387,52388,155227,52389,52390,167915,52391,52392,52393,52394,155228,52395,52396,167916,52397,52401,52398,52399,155229,52400,52402,167917,52403,52404,52405,155230,52406,155231,52407,106130,48861,163628,163629,163630,48862,28022,175762,48864,48865,52408,52409,48866,52410,52411,52412,52413,155232,52414,52415,52416,52417,48867,52418,52419,52420,52421,52422,52423,52424,52425,52426,48891,52427,155233,48908,52438,52428,48881,48868,52429,167918,52430,52431,52432,52433,52434,52435,52436,52437,48886,167919,48892,48897,48902,155235,48909,52439,52440,48882,48869,52441,48887,166698,52442,52443,52444,52445,52446,52447,52448,52449,167920,48893,48898,48903,155236,48910,52450,52451,48883,48870,52452,48888,166699,52453,52454,52455,52457,52458,52459,52460,52461,167921,48894,48899,48904,155238,48911,155239,106131,965,74976,74977,74978,74979,74980,74981,74982,167922,48561,125472,156949,156950,125476,155234,125477,155237,156952,156951,170065,91247,41964,45051,41965,45052,45053,50975,50977,50976,52535,163631,41966,45054,50978,50979,50980,45055,50981,50982,50983,50985,50986,52536,50987,52537,50988,50989,50990,50991,50992,50993,50994,41967,45056,45057,14879]
It seems that you plan to use your array to check the existence of some values. In this case, you might be better off with an object map which will perform O(1) lookups.
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Like plalx said, any IDE with regex replacement can do it.
As an alternative, you can chech http://www.regexr.com/
And use something like /([0-9]+)/g for matching those numbers and then use a substitution like $1,
Then just add your [].

In your Excel spreadsheet, create a cell with a function that pulls all the numbers in the list into a javascript array format. Something like:
=CONCATENATE("[", TRANSPOSE(A1:A700 & ”, “) ,"]")
Something like that should create a new cell with all your list values in a single, comma delimited string, enclosed by [].
Copy the entire string and place it in your javascript file as a variable.
var list = [value1, value2, value3, ...];
Then you can do whatever you want with it.

JSON String remove characters

I have a JSON array and I need to use the data in my application. I am calling it through javascript and I can iterate between the variables.
The problem I have, is the data isn't usable because of the '+' characters and the %2C etc.
"events":[{"url":"","name":"Test+Event2","location":"Some+little+village","eventDate":"Wednesday%2C+20th+August+2014+from+10%3A00+to+11%3A00"}
Is there a Javascript or JQuery solution to filter the strings?

It looks like it is a URL Encoded JSON string. var json_string = decodeURIComponent(uri_encoded_string) should do the job.