MaxLength属性实现文本区域

jMaxLength jQuery Plugin This plugin allows a user to limit the number of characters in a form element. It Applies best for textarea elements as input text already have a maxlength attribute implemented. Unlike most plugins, * at the limit, when a user enters a new character, the text stays unchanged instead of being trimmed from the end. * at the limit, commands to copy, cut, or delete are allowed. Paste is allowed if the text stays within the maximum number of characters. **Usage**: * Add the attribute maxLength="xx" to your element (textarea) * Call the plugin $(selector).jMaxLength(); **Upcoming changes**: * Character Counter * Options (error class, error message, counter message)