whatsapp如何加链接，点击a标签调起whatsapp

<a href="whatsapp://send?phone=手机号码" class="keapp" target="_blank">Whatspp</a>

<a href="skype:你的帐号?chat">Skype</a>

调起whatsapp
<a href="whatsapp://send?phone=86135********">+86-135 **** ****</a>