h5 获取手机权限

http://www.jianshu.com/p/d83040462af2

定位权限：

var getLocation = function() {
if (navigator.geolocation){
navigator.geolocation.getCurrentPosition(displayPosition, locationError);
} else {
alert('浏览器不支持地理定位。');
}
}
var displayPosition = function(pos) {
alert('维度：'+ pos.coords.latitude+',经度：'+ pos.coords.longitude);
document.getElementById("label").innerHTML = '维度：'+ pos.coords.latitude+',经度：'+ pos.coords.longitude;
var properties = ['longitude', 'latitude', 'altitude', 'accuracy', 'altitudeAccuracy', 'heading', 'speed'];
for (var i = 0, len = properties.length; i < len; i++) {
var value = pos.coords[properties[i]];
document.getElementById(properties[i]).innerHTML = value;
}
document.getElementById('timestamp').innerHTML = pos.timestamp;
}
var locationError = function(error){
switch(error.code) {
case error.TIMEOUT:
showError('A timeout occured! Please try again!');
break;
case error.POSITION_UNAVAILABLE:
showError('We can\'t detect your location. Sorry!');
break;
case error.PERMISSION_DENIED:
showError('Please allow geolocation access for this to work.');
break;
case error.UNKNOWN_ERROR:
showError('An unknown error occured!');
break;
}
}
var showError = function(error){
alert(error);
}

相机权限：

navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia