I need to split a string by a delimiter so that it becomes 2 arrays.
Here is an example of string "55,56,*,51,52".
I want to end up with [["55","56],["51","52"]]
I have trie with split() in javascript to no avail-
I believe I need a regex solution, which I do not know how to do.
if the string to process looks like this ",*,51,52" it should return
[[],["51,"52"]]
if it looks like "51,*," it should return [["51"],[]]
and ",*," should return [[],[]] -
Is this possible?
Thanks.
You can do this via the string.split method:
var str = "55,56,*,51,52".split('*');
for (var i=0;i<str.length;i++) str[i] = str[i].split(',');
//str now contains [["55", "56", ""], ["", "51", "52"]]
You can change your string to "55,56*51,52" to get the result of [["55","56],["51","52"]].
Alternatively, you can also do it the slightly longer way:
var str = "55,56,*,51,52".split('*');
for (var i=0;i<str.length;i++) {
str[i] = str[i].split(',');
for (var n=0;n<str[i].length;n++)
!str[i][n] && str[i].splice(n,1);
}
//str now contains [["55","56],["51","52"]]
Then it will work with the commas around the asterisk.
, either at start or end of string and remove it.Here is a shorter version without using split:
function twoArrays(str) {
return JSON.parse(("[[" + str + "]]").replace(/,\*,/g, "],["));
}
// Examples:
twoArrays("55,56,*,51,52") // => [[55,56],[51,52]]
twoArrays("55,56,*,") // => [[55,56],[]]
twoArrays(",*,") // => [[],[]]
