Develop Reference

Javascript split does not work

I need split to this data.
I have a string value like this
var str = "[:en]tomato[:ml]തക്കാളി[:]";
I need below output
tomato,തക്കാളി.
I try to this
var res = str.split("[:en]");
console.log("values",res)
The values has been does not split .
Here is my output
[:en]tomato[:ml]തക്കാളി[:]

You can use this code:
var str = "[:en]tomato[:ml]തക്കാളി[:]";
str.split(/\[[:\w\s\d]*\]/).filter(function(data){
if(data != "")
return data;
});
//["tomato", "തക്കാളി"]

It is working as expected, consider the following example.
When you split the string based on ',' we will get the following output.
var str = ",1,2,3";
var res = str.split(",");
console.log(res)
["", "1", "2", "3"]
Similarly, you are trying to split using [:en] so it is getting split into two different words.

You are splitting with the wrong string.
You want to split with "[:ml]".
And the other 2 strings at the start and end, you want to be removed before the split part:
var str = "[:en]tomato[:ml]തക്കാളി[:]";
var str = str.replace('[:en]','');
var str = str.replace('[:]','');
var res = str.split("[:ml]");
console.log("values",res)

Use the Regexp split function:
var str = "[:en]tomato[:ml]തക്കാളി[:]";
var res = str.split(/\[:[a-z]*\]/);
alert(res)

Extract words with RegEx

I am new with RegEx, but it would be very useful to use it for my project. What I want to do in Javascript is this :
I have this kind of string "/this/is/an/example" and I would like to extract each word of that string, that is to say :
"/this/is/an/example" -> this, is, an, example. And then use each word.
Up to now, I did :
var str = "/this/is/a/test";
var patt1 = /\/*/g;
var result = str.match(patt1);
document.getElementById("demo").innerHTML = result;
and it returns me : /,,,,,/,,,/,,/,,,,,
I know that I will have to use .slice function next if I can identify the position of each "/" by using search for instance but using search it only returns me the index of the first "/" that is to say in this case 0.
I cannot find out.
Any Idea ?
Thanks in advance !

Use split()
The split() method splits a String object into an array of strings by separating the string into substrings, using a specified separator string to determine where to make each split.
var str = "/this/is/a/test";
var array = str.split('/');
console.log(array);
In case you want to do with regex.
var str = "/this/is/a/test";
var patt1 = /(\w+)/g;
var result = str.match(patt1)
console.log(result);

Well I guess it depends on your definition of 'word', there is a 'word character' match which might be what you want:
var patt1 = /(\w+)/g;
Here is a working example of the regex
Full JS example:
var str = "/this/is/a/test";
var patt1 = /(\w+)/g;
var match = str.match(patt1);
var output = match.join(", ");
console.log(output);

You can use this regex: /\b[^\d\W]+\b/g, to have a specific word just access the index in the array. e.g result[0] == this
var str = "/this/is/a/test";
var patt1 = /\b[^\d\W]+\b/g;
var result = str.match(patt1);
document.getElementById("demo").innerHTML = result;
<span id="demo"></span>

How to split a string by <span> tag in Javascript

I have a data.text string that returns a value like:
<span>Name</span>Message
Is it possible in Javascript to take this value and split in to two so that I can get 'Name' and 'Message' in two different variables?
I tried,
var str = data.text;
var arr[] = str.split("</span>", 2);
var str1 = arr[0];
var theRest = arr[1];
But didn't work

You should use a DOM parser to parse HTML.
var str = "<span>Name</span>Message",
el = document.createElement('div');
el.innerHTML = str;
[].map.call(el.childNodes, function(node) {
return node.textContent;
}); // [ "Name", "Message" ]

There might be many methods but adding on using split.
var str = '<span>Name</span>Message';
var result = str.split(/<\/?span>/); // Split by span tags(opening and closing)
result.shift(); // Remove first empty element
console.log(result);
document.write(result);
The regex here <\/?span> will match the <span> and </span> both as in the regex \/? has made / optional.
You can also use following regex with non-capturing group.
(?:</?span>)(\w+)
var str = '<span>Name</span>Message';
var regex = /(?:<\/?span>)(\w+)/g,
result = [];
while (res = regex.exec(str)) {
result.push(res[1]);
}
console.log(result);
document.write(result);

You can replace the open label with a empty string and then split the string by the close label, something like this:
var values = data.text.replace('<span>', '').split('</span>');
console.log(values[0]); // Name
console.log(values[1]); // Message

jQuery string split the string after the space using split() method

my code
var str =$(this).attr('id');
this will give me value == myid 5
var str1 = myid
var str2 = 5
i want something like this ..
how to achieve this using split method

var str =$(this).attr('id');
var ret = str.split(" ");
var str1 = ret[0];
var str2 = ret[1];

Use in-built function: split()
var source = 'myid 5';
//reduce multiple places to single space and then split
var splittedSource = source.replace(/\s{2,}/g, ' ').split(' ');
console.log(splittedSource);
​
Note: this works even there is multiple spaces between the string groups
Fiddle: http://jsfiddle.net/QNSyr/6/

One line solution:
//<div id="mypost-5">
var postId = this.id.split('mypost-')[1] ); //better solution than the below one!
-OR-
//<div id="mypost-5">
var postId = $(this).attr('id').split('mypost-')[1];

Simple way to use variables in regex

This almost has the answer...
How do you use a variable in a regular expression?
I need to know if I can use variables instead of hardcode in the regex?
str1 = str1.replace(/abcdef/g, "stuvwxyz");
can I use variables instead of /abcdef/g and "stuvwxyz"

Of course that you can, every single bit of this can be dynamic:
var pattern = 'abcdef';
var input = 'stuvwxyz';
var modifiers = 'g';
var regex = new RegExp(pattern, modifiers);
var str1 = 'Hello abcdef';
str1 = str1.replace(regex, input);
Checkout the docs as well.

Yes.
var pattern = /abcdef/g;
var input = "stuvwxyz";
str1 = str1.replace(pattern, input);

Like this?
var regex = /abcdef/g;
var string = "stuvwxyz";
var str1 = "abcdef";
str1 = str1.replace(regex, string);