JS中关于正则的巧妙操作

废话不多说了，直接给大家贴代码了，具体代码如下所示：

var msg="dsada[emoji:37]dsadas[emoji:3900]法拉綏芬河";
function fetch(msg) {
  var match, result = msg,
    reg = /\[emoji:\d+\]/g,
    emojiindex,
    totalemojinum = 45;
  while (match = reg.exec(msg)) {
    console.log(match[0]);//[emoji:37],[emoji:3900]
    emojiindex = match[0].slice(7, -1);
    console.log(emojiindex);//37,3900
    if (emojiindex > totalemojinum) {
      result = result.replace(match[0], '[x]');
    } else {
      result = result.replace(match[0], '<img src="images/eomji_' + emojiindex + '.gif" />');
    };
  };
  return result;//"dsada<img src="images/eomji_37.gif" />dsadas[x]法拉綏芬河"
}
fetch(msg);

总结

以上所述是小编给大家介绍的js中关于正则的巧妙操作，希望对大家有所帮助