Whatsapp button working on Android but Blank on IOS

This code is working good on android device like Samsung Galaxy Tab and S3 etc. After selecting a contact, it appears TheTitle -> TheURL.

But it's not working at iOS device like iPhone 6 plus and iPhone 5. After selecting a contact, the TheTitle -> TheURL does not appear, it's just blank.

How can I fix this?

var TheTitle = "post Title Text", TheURL = "http://ift.tt/1GV84XP";

$('#myID').after('<a class="button-share whatsapp" data-action="share/whatsapp/share" href="whatsapp://send?text=' + TheTitle + ' -> ' + TheURL + '" target="_blank">WhatsApp</a>');