How to Correctly Sort Strings in JavaScript Object Arrays?

JavaScript String Sorting

In JavaScript, sorting strings can be a bit tricky due to their quirks. One common challenge is sorting objects based on a string attribute, using the sort() method.

Problem:

Attempts to sort objects using list.sort(function (a, b) { return a.attr - b.attr }) often fail for string attributes.

Solution:

To sort strings in JavaScript, use String.prototype.localeCompare within the sort function:

list.sort(function (a, b) {
    return ('' + a.attr).localeCompare(b.attr);
});

By converting a.attr to a string explicitly, we avoid exceptions. localeCompare supports locale-aware comparisons and is widely supported across browsers.

Alternative Approach:

An alternative method is to use the following code snippet:

if (item1.attr < item2.attr)
  return -1;
if ( item1.attr > item2.attr)
  return 1;
return 0;

However, this approach does not respect the locale and may produce inconsistent results in different environments.

The above is the detailed content of How to Correctly Sort Strings in JavaScript Object Arrays?. For more information, please follow other related articles on the PHP Chinese website!