如何使用javascript检测表情符号?

I need help on how to detect if the input contains japanese emoji/emoticon. Currently I'm build a system which charset=utf-8. On input text, user can input japanese character/alpanumerics/symbols but if they insert emoji, onsubmit javascript will check if there is an emoji, error message will display. Really have no idea on how to detect emoji.

我需要帮助如何检测输入是否包含日语表情符号。目前我正在构建一个字符集=utf-8的系统。在输入文本中，用户可以输入日语字符/alpanumerics/symbols，但是如果他们插入emoji, onsubmit javascript会检查是否有一个emoji，会显示错误信息。真的不知道怎么检测表情符号。

5 个解决方案

#1

You can use the following regex:

您可以使用以下regex:

/(?:[\u2700-\u27bf]|(?:\ud83c[\udde6-\uddff]){2}|[\ud800-\udbff][\udc00-\udfff]|[\u0023-\u0039]\ufe0f?\u20e3|\u3299|\u3297|\u303d|\u3030|\u24c2|\ud83c[\udd70-\udd71]|\ud83c[\udd7e-\udd7f]|\ud83c\udd8e|\ud83c[\udd91-\udd9a]|\ud83c[\udde6-\uddff]|[\ud83c[\ude01-\ude02]|\ud83c\ude1a|\ud83c\ude2f|[\ud83c[\ude32-\ude3a]|[\ud83c[\ude50-\ude51]|\u203c|\u2049|[\u25aa-\u25ab]|\u25b6|\u25c0|[\u25fb-\u25fe]|\u00a9|\u00ae|\u2122|\u2139|\ud83c\udc04|[\u2600-\u26FF]|\u2b05|\u2b06|\u2b07|\u2b1b|\u2b1c|\u2b50|\u2b55|\u231a|\u231b|\u2328|\u23cf|[\u23e9-\u23f3]|[\u23f8-\u23fa]|\ud83c\udccf|\u2934|\u2935|[\u2190-\u21ff])/g

If you just want to remove it from the string, you can do something like this.

如果你只是想从字符串中删除它，你可以这样做。

function removeEmojis (string) {
  var regex = /(?:[\u2700-\u27bf]|(?:\ud83c[\udde6-\uddff]){2}|[\ud800-\udbff][\udc00-\udfff]|[\u0023-\u0039]\ufe0f?\u20e3|\u3299|\u3297|\u303d|\u3030|\u24c2|\ud83c[\udd70-\udd71]|\ud83c[\udd7e-\udd7f]|\ud83c\udd8e|\ud83c[\udd91-\udd9a]|\ud83c[\udde6-\uddff]|[\ud83c[\ude01\uddff]|\ud83c[\ude01-\ude02]|\ud83c\ude1a|\ud83c\ude2f|[\ud83c[\ude32\ude02]|\ud83c\ude1a|\ud83c\ude2f|\ud83c[\ude32-\ude3a]|[\ud83c[\ude50\ude3a]|\ud83c[\ude50-\ude51]|\u203c|\u2049|[\u25aa-\u25ab]|\u25b6|\u25c0|[\u25fb-\u25fe]|\u00a9|\u00ae|\u2122|\u2139|\ud83c\udc04|[\u2600-\u26FF]|\u2b05|\u2b06|\u2b07|\u2b1b|\u2b1c|\u2b50|\u2b55|\u231a|\u231b|\u2328|\u23cf|[\u23e9-\u23f3]|[\u23f8-\u23fa]|\ud83c\udccf|\u2934|\u2935|[\u2190-\u21ff])/g;

  return string.replace(regex, '');
}

#2

We can detect all list of surrogate pairs or the Emoji characters in a specific range. If the issue related with storing the input string to database like MySQL version before 5.5 we need to detect and remove all the surrogate pairs using the below regex

我们可以在一个特定的范围内检测所有代理对或表情符号的列表。如果与在5.5之前将输入字符串存储到数据库(如MySQL version)有关的问题，我们需要使用下面的regex检测并删除所有代理对

/([\uD800-\uDBFF][\uDC00-\uDFFF])/g.

#3

Simple function that returns true if your string contains one or more emojis.

如果字符串包含一个或多个表情符号，则返回true的简单函数。

function isEmoji(str) {
    var ranges = [
        '\ud83c[\udf00-\udfff]', // U+1F300 to U+1F3FF
        '\ud83d[\udc00-\ude4f]', // U+1F400 to U+1F64F
        '\ud83d[\ude80-\udeff]' // U+1F680 to U+1F6FF
    ];
    if (str.match(ranges.join('|'))) {
        return true;
    } else {
        return false;
    }
}

#4

You can use regular expression to detect it in input text:

可以使用正则表达式在输入文本中检测:

/([\uE000-\uF8FF]|\uD83C[\uDF00-\uDFFF]|\uD83D[\uDC00-\uDDFF])/g

#5

You can use a regular expression from this lib emoji-regex

您可以使用这个lib emoji-regex中的正则表达式

#1