js检测是否含有emoji表情

var param = document.getElementById(id).value;
var regRule = /\uD83C[\uDF00-\uDFFF]|\uD83D[\uDC00-\uDE4F]/g;
if(param.match(regRule)) {
param = param.replace(/\uD83C[\uDF00-\uDFFF]|\uD83D[\uDC00-\uDE4F]/g, “”);
alert(“不支持表情”);
}