emoj表情过滤

用法：  isEmojiCharacter（input_value）   //  提交时候校验。true：emoj表情   undefined：无

 

if(isEmojiCharacter(val)){
      console.log(8)
      return;
 }

 

 

function isEmojiCharacter(substring) {

for ( var i = 0; i < substring.length; i++) {

var hs = substring.charCodeAt(i);

if (0xd800 <= hs && hs <= 0xdbff) {

if (substring.length > 1) {

var ls = substring.charCodeAt(i + 1);

var uc = ((hs - 0xd800) * 0x400) + (ls - 0xdc00) + 0x10000;

if (0x1d000 <= uc && uc <= 0x1f77f) {

return true;

}

}

} else if (substring.length > 1) {

var ls = substring.charCodeAt(i + 1);

if (ls == 0x20e3) {

return true;

}

} else {

if (0x2100 <= hs && hs <= 0x27ff) {

return true;

} else if (0x2B05 <= hs && hs <= 0x2b07) {

return true;

} else if (0x2934 <= hs && hs <= 0x2935) {

return true;

} else if (0x3297 <= hs && hs <= 0x3299) {

return true;

} else if (hs == 0xa9 || hs == 0xae || hs == 0x303d || hs == 0x3030

|| hs == 0x2b55 || hs == 0x2b1c || hs == 0x2b1b

|| hs == 0x2b50) {

return true;

}

}

}

}