angualrjs 文本框去掉表情

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>