html:
<textarea ng-module="dataText"></textarea>
js:
<script>
var BQ_RANGES=[
'\ud83c[\udf00-\udfff]',
'\ud83d[\udc00-\ude4f]',
'\ud83d[\ude80-\udeff]'
];
//过滤
var reg = new RegExp(BQ_RANGES.join('|'),'g');
if(reg.test(dataText)){
alert("您输入的字符不包含表情")
}
</scirpt>