how to remove null values from an array using jquery

Possible Duplicate:
Remove empty elements from an array in Javascript

I want to remove null or empty elements from an array using jquery

var clientName= new Array();
clientName[0] = "jack";
clientName[1] = "";
clientName[2] = "john";
clientName[2] = "peter";

Please give some suggestions.

---

使用jquery grep函数，它会标识传递您定义的标准的数组元素

arr = jQuery.grep(arr, function(n, i){
  return (n !== "" && n != null);
});

---

There is no need in jQuery, use plain JavaScript (it is faster!):

var newArray = [];
for (var i = 0; i < clientname.length; i++) {
    if (clientname[i] !== "" && clientname[i] !== null) {
        newArray.push(clientname[i]);
    }
}
console.log(newArray);

Another simple solution for modern browsers (using Array filter() method):

clientname.filter(function(value) {
    return value !== "" && value !== null;
});

---

Was thinking that since jQuery's .map() function relies on returning something not null / undefined, you can get away with just something like this:

var new_array = $.map(old_array, function (el) {
    return el !== '' ? el : null;
});

You still have to check for the empty string, but you really don't have to check for the null and undefined anymore, so that's one less complication in your logic.

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