Для сохранения на SD-карте ......
function save(){
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is ready
//
function onDeviceReady() {
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, gotFS, fail);
}
function gotFS(fileSystem) {
fileSystem.root.getFile("pic.jpg", {create: true, exclusive: false}, gotFileEntry, fail);
}
function gotFileEntry(fileEntry) {
fileEntry.createWriter(gotFileWriter, fail);
}
function gotFileWriter(writer) {
var photo = document.getElementById("image");
writer.write(photo.value);
}
function fail(error) {
console.log(error.code);
}