<textarea name="" id="phones" cols="30" rows="10">

+86 18612345678

8613898765421

135-1234-5678

+8615145698763

+86 151-4569-8763

</textarea>

<script type="text/javascript">

    var p = document.getElementById('phones'),

        txt = p.value;//得到手机号

​

    //将非数字的替换为空, 将以86开头后面跟11位数字的,替换为后面的11位数字

    p.value = txt.replace(/[-+ ]/g, '').replace(/^86(\d{11})/gm, '$1');

</script>

​