I'm searching the shortest method to transform a string like
"str1,str2,str3,..."
into an array of arrays like :
[["str1"], ["str2"], ["str3"]]
I could use a loop or an each, but I wonder if there is something more elegant.
3 Answers
You can make use of split() and map() like so:
// This could be turned into 1 line but is split here for readibility
var array = string.split(',');
array = array.map(function(value){
return [value];
});
Note: map() doesn't exist in all implementations, check out this article for more info on it.
2 Comments
Guid
Argg, I'm screwed, I must support IE7. But thanks, it would be a fine solution for me.
Tom Walters
Gotta love IE keeping you on your toes! But that article details how to implement it yourself so all is not lost!
Tom Walter's answer is great, but in case you don't want to use map:
var str = "str1,str2,str3";
var arr = str.split(",");
var arrOfarrs = [];
for(var i = 0; i < arr.length; i++) {
arrOfarrs.push([arr[i]]);
}
Alternatively, you can add a map polyfill to add support for older browsers:
Array.prototype.map = Array.prototype.map || function(fn) {
var arr = [];
for(var i = 0; i < this.length; i++) {
arr.push(fn(this[i]));
}
return arr;
};
which would then allow you to do
var arr = str.split(",").map(function(val) {
return [val];
});
1 Comment
Guid
Yes, it's more or less the solution I adopted (I'm using the Extjs "Ext.each()" method since I use this framework)
["str1", "str2", str3"]?