How to split strings - javascript

I have tried Split("?") and Split('?'). Both give the same error (link.split is not a function), so i assume that there is a way to be able to split but not using this Split?
Maybe jQuery?
Edit: Got it, it should be href.split. So as jordan said, it was not a string. So i used x.href.split("?") and it worked like a charm.

Jetpack just uses JavaScript so this should work:
var str = "My.string";
str.split("."); // => [ "My", "string" ]
If it tells you "split is not a function" then it probably means your variable doesn't hold a string like you think it does.

If the object is not already a string, convert it first.
myObject.toString().split("?");

Related

How to use `%value%` in javascript?

I am learning JavaScript and I see %value% in a code but I do not know what does it mean or how to use it. Can anyone please help me explain to me. Thank you very much.
var formattedLocation = HTMLworkLocation.replace("%data%", work.jobs[job].location);
"%data%" is just a literal string. This code will take the value of HTMLWorkLocation, look for the first occurrence of %data% in it, and replace that with the value of work.jobs[job].location, and store the resulting string in formattedLocation.
var work = {
jobs: [{
location: "Home office"
}]
};
var job = 0;
var HTMLworkLocation = "John is located at %data%";
var formattedLocation = HTMLworkLocation.replace("%data%", work.jobs[job].location);
console.log(formattedLocation);
This is probably part of a template system that's used to replace placeholders like %data% with values that come from a table.
You're using string.replace which takes a string or regular expression as it's first argument. Based on the code you posted it looks like you're looking for the string "%data%" (or whatever string you're looking for) in HTMLworkLocation and replacing it with the value in work.jobs[job].location. Then it is being stored in formattedLocation.
I would put a debugger; line after that line of code so you can see what the values are in the debugger console. That might help make more sense of things.
Here is more info on the str.replace method with some examples

Converting a String into an Object

I'm receiving a string like obj{a="foo",b="bar",c=3,d=4.0} inside a nodejs environment I'm working in and I'm trying to convert this String into a reference-able Object like this:
{
a : "foo",
b : "bar",
c : 3,
d : 4.0
}
Assigned to obj of course.
I've used a myriad of formatting tricks but whenever I call JSON.parse() I get unexpected character errors. Usually on the first alpha-character it sees.
My next step is to write several nested loops to make all of the assignments manually but I'm hoping someone can point me in the right direction on how to parse this.
EDIT: Ok there's a little more to the story and I thought I should omit it but I guess explaining everything would be helpful.
The actual data packet that I'm receiving looks like this.
ack{a="000000061",b=0,c=2.0}\rb{a=244.0,b=255,c=4.0}\rc{a=6.0,b=55,c=55}endack;
So yeah that's the actual string I'm trying to parse into three distinct accessible Objects. I know I'm having a brain fart from a long day but yeah it's giving me a run for my money right now.
First replace the "=" with ":" and remove the obj infront
str = str.replace(/=/g, ":").replace("obj{", "{")
Since it's not in correct json format (but can be read by js parser) we can't use JSON.parse but we can use eval
eval("var obj = " + str);
Obvious there are some assumptions with this technique such that = always mean colon and you won't have obj{ as text (but the latter can be fixed with a simple substring method)
Keep in mind eval is also considered evil so use at your own risk. Imagine if the user were to send bad data, they could easily get into your parser and run something malicious. But hopefully this will give you an idea or inspiration to a better solution.
You can go a step further and use
str = 'obj{a="foo",b="bar",c=3,d=4.0}'
str = str.substr(3,str.length).replace(/([{,])([\w])=/g, '$1\"$2\":');
var obj = JSON.parse(str);

Regex: find whatever comes after one thing before another thing

I want to find anything that comes after s= and before & or the end of the string. For example, if the string is
t=qwerty&s=hello&p=3
I want to get hello. And if the string is
t=qwerty&s=hello
I also want to get hello
Thank you!
\bs=([^&]+) and grabbing $1should be good enough, no?
edit: added word anchor! Otherwise it would also match for herpies, dongles...
Why don't you try something that was generically aimed at parsing query strings? That way, you can assume you won't run into the obvious next hurdle while reinventing the wheel.
jQuery has the query object for that (see JavaScript query string)
Or you can google a bit:
function getQuerystring(key, default_)
{
if (default_==null) default_="";
key = key.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
var regex = new RegExp("[\\?&]"+key+"=([^&#]*)");
var qs = regex.exec(window.location.href);
if(qs == null)
return default_;
else
return qs[1];
}
looks useful; for example with
http://www.bloggingdeveloper.com?author=bloggingdeveloper
you want to get the "author" querystring's value:
var author_value = getQuerystring('author');
The simplest way to do this is with a selector s=([^&]*)&. The inside of the parentheses has [^&] to prevent it from grabbing hello&p=3 of there were another field after p.
You can also use the following expression, based on the solution provided here, which finds all characters between the two given strings:
(?<=s=)(.*)(?=&)
In your case you may need to slightly modify it to account for the "end of the string" option (there are several ways to do it, especially when you can use simple code manipulations such as manually adding a & character to the end of the string before running the regex).

javascript object value to string conversion

I am getting the value of input using javascript using below code.
var name=document.getElementById("firstName").value;
Getting output like rk-chaitu.I want to split this output using reg expression.
Now my question is how to convert name object to String?
Regards,
Chaitu
name should already be a string. You can directly use name.split(separator).
EDIT: I see you have added information. Can you post more code? Perhaps the error comes from something else.
The value attribute should already be a String.

Fix JS object replacing/encoding of strings?

I have an object with a value that has spaces in it, and it gets replaced with an encoded string, like:
alldata["test"] will return "Long+name"
or something like
alldata["test"] will return "%BLong+name%B"
when it's set by using
alldata["test"] = "Long name" (or "[Long name]") via a series of code.
Am I missing something? I don't think using $.toEvalJSON is the right way to go because I haven't transformed the object into JSON. I'd rather not do a string.replace either because I'd have to capture every possible type of input that is encoded.
Thank you!
If your question is how to remove the encoding, you could always use
unescape(s)
See Escape and Unescape Functions
The issue is related to the fact that I failed to mention that the object was being assigned the string as a result of a .serialize() command. Hence a urldecode() will work perfectly.

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