javaScript nl2br & br2nl functions

  • 2020-01-28 21:42:57
  • 733
The exchange of new line & br HTML tag could refer to PHP - nl2br() function, which uses to inserts HTML line breaks before all newlines in a string. These JavaScript functions consider whether to use insert or replace to handle the swap

nl2br 

/**
 * This function is same as PHP's nl2br() with default parameters.
 *
 * @param {string} str Input text
 * @param {boolean} replaceMode Use replace instead of insert
 * @param {boolean} isXhtml Use XHTML 
 * @return {string} Filtered text
 */function nl2br (str, replaceMode, isXhtml) {

  var breakTag = (isXhtml) ? '<br />' : '<br>';
  var replaceStr = (replaceMode) ? '$1'+ breakTag : '$1'+ breakTag +'$2';
  return (str + '').replace(/([^>\r\n]?)(\r\n|\n\r|\r|\n)/g, replaceStr);}

br2nl

/**
 * This function inverses text from PHP's nl2br() with default parameters.
 *
 * @param {string} str Input text
 * @param {boolean} replaceMode Use replace instead of insert
 * @return {string} Filtered text
 */function br2nl (str, replaceMode) {   

  var replaceStr = (replaceMode) ? "\n" : '';
  // Includes <br>, <BR>, <br />, </br>
  return str.replace(/<\s*\/?br\s*[\/]?>/gi, replaceStr);}

 

Để lại comment của bạn nếu gặp khó khăn

Bài viết liên quan