This question already has answers here:
How do I handle newlines in JSON?
(10 answers)
Closed 8 years ago.
In my website I try to convert a string to JSON which contains a newline.
JSON.parse('{"hallo":"line1\r\nline2","a":[5.5,5.6,5.7]}');
This produces an "Unexpected token" error. Do I need to escape that somehow?
Yes, you should escape both \n and \r as they belong to the list of control characters. Full list of characters that need to be escaped can be found here. Your code would be
obj = JSON.parse('{"hallo":"line1\\r\\nline2","a":[5.5,5.6,5.7]}');
JSFiddle: link
Try:
JSON.parse('{"hallo":"line1\\r\\nline2","a":[5.5,5.6,5.7]}');
Related
This question already has answers here:
JavaScript: A BackSlash as part of the string
(3 answers)
How to deal with backslashes in json strings php
(6 answers)
Closed 3 years ago.
I have the string with backslashes:
const str = 'E:\\music\\post'; // It represents "E:\music\post" text in HTML
JSON.stringify(str) returns "the same" string '"E:\\music\\post"'. Why not '"E:\\\\music\\\\post"'?
JSON.parse('"E:\\music\\post"') will throws the error: Uncaught SyntaxError: Unexpected token m in JSON at position 4.
JSON.parse('"E:\\\\music\\\\post"') works OK.
But another strange thing is that JSON.parse(JSON.stringify("E:\\music\\post")) works well. Why?
That is the better workaround for it? I want to save the string to json file, and later to create an object from the json file.
This question already has answers here:
Regular expression to get a string between two strings in Javascript
(13 answers)
Closed 4 years ago.
I am trying to get the text between the two tags which also handles multiple lines.I have managed to do it in PHP regex but i am stuck on the javascript one.
<any_tag>random text
dffdffdfdfdfdfdfdfd
dfdfdfdfdfdfdfdfdf
</any_tag>
I want to get the text between <any_tag> and </any_tag>
This is the regex for php
https://regex101.com/r/tQ1bX7/2
Now i am trying to achieve to same in javascript
Give try on following :
/[^(<any_tag>)](?:.*(\r?\n?).*)*(?=\<\/any_tag\>)/gi
Explination :
[^(<any_tag>)] match a single character not present in the list below
(<any_tag>) a single character in the list (<any_tg>) literally (case insensitive)
This question already has answers here:
jQuery.parseJSON single quote vs double quote
(4 answers)
Closed 7 years ago.
The following throws "JavaScript runtime error: Invalid character":
var opts = "[{'UOM':'E','Description':'E - Each'},{'UOM':'C','Description':'C - Per 100'},{'UOM':'M','Description':'M - Per 1000'}]"
var options = JSON.parse(opts);
What invalid character is in my JSON string? Thanks
You need to replace the apostrophes with escaped quotation marks (\").
This question already has answers here:
How do I replace an asterisk in Javascript using replace()?
(6 answers)
Closed 7 years ago.
I am trying to replace the same string *a*a consistently with *a.
Tried many variations of something like this, but none really worked:
s = s.replace( /\b*a*a\b/g, "*a");
So far running this leads to all xzy*a being replaced with xyz
* is a special regex character. If you want to match only an actual asterisk, then you have to escape it like this:
s = s.replace( /\*a\*a/g, "*a");
Working demo: http://jsfiddle.net/jfriend00/gvgshwyz/
An asterisk is a special regex character.
You just have to escape it like this: \*a in place of *a
This question already has answers here:
json parse error with double quotes
(9 answers)
Closed 8 years ago.
I am using the below line in Javascript to parse a json string.
var obj = JSON.parse('{"respDataMap":{"userMessages":{"lbSearchHint":"Enteravalueandpress\"Enter\"orclickon\"Search\"#"}},"respErrorCode":"","respErrorMessage":""}');
The escaped double-quote character in the string is causing the json parsing to fail.
But, the same string pasted in online JSON validators is certified as valid.
How do I fix this?
Use double slash like for escape character
var obj = JSON.parse('{"respDataMap":{"userMessages":{"lbSearchHint":"Enteravalueandpress\\"Enter\\"orclickon\\"Search\\"#"}},"respErrorCode":"","respErrorMessage":""}');