Javascript在第一个空格处分割字符串

Question

I have the following code as part of a table sorting script. As it is now, it allows names in the "FIRST LAST" format to be sorted on LAST name by "reformatting" to "LAST, FIRST".

var FullName = fdTableSort.sortText;
function FullNamePrepareData(td, innerText) {
  var a = td.getElementsByTagName('A')[0].innerHTML;
  var s = innerText.split(' ');
  var r = '';
  for (var i = s.length; i > 0; i--) {
    r += s[i - 1] + ', ';
  }
  return r;
}

It currently seems to sort on the name after the LAST space (ex. Jean-Claude Van Damme would sort on 'D').

How could I change this script to sort on the FIRST space (so Van Damme shows up in the V's)?

Thanks in advance!

Answer 1

You can shorten that functio a bit by the use of array methods :

function FullNamePrepareData(td, innerText) {
    return innerText.split(' ').reverse().join(', ');
}

To put only the first name behind everything else, you might use

function FullNamePrepareData(td, innerText) {
    var names = innerText.split(' '),
        first = names.shift();
    return names.join(' ')+', '+first;
}

or use a Regexp replace :

function FullNamePrepareData(td, innerText) {
    return innerText.replace(/^(\S+)\s+([\S\s]+)/, "$2, $1");
}

Answer 2

Instead of the .split() and the loop you could do a replace:

return innerText.replace(/^([^\s]+)\s(.+)$/,"$2, $1");

That is, find all the characters up to the first space with ([^\\s]+) and swap it with the characters after the first space (.+) , inserting a comma at the same time.

Answer 3

I don't know where the sorting happens; it sounds like you just want to change the reordering output.

The simplest would be to use a regexp:

// a part without spaces, a space, and the rest
var regexp = /^([^ ]+) (.*)$/;

// swap and insert a comma
"Jean-Claude Van Damme".replace(regexp, "$2, $1"); // "Van Damme, Jean-Claude"

Answer 4

I think you're after this:

    var words = innerText.split(' '),
        firstName = words.shift(),
        lastName = words.join(' ');
    return lastName + ', ' + firstName;        

Which would give you "Van Damme, Jean-Claude"