我知道如何从用户输入的文本字段中检索值，但是，我希望能够检索从以下代码中输出的文本：
var message = url;
document.getElementById('result').innerHTML = message;
基本上我想存储一个缩短的网址，其中网址是从Google云端硬盘中选择的文档生成的，然后该网址会在屏幕上显示给用户，这就是我想要抓取的网址缩短。
以下是整个代码：
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.min.js"></script>
<script src="http://www.parsecdn.com/js/parse-1.2.12.min.js"></script>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<title>upload</title>
<script type="text/javascript">
// The Browser API key obtained from the Google Developers Console.
var developerKey = 'ID';
// The Client ID obtained from the Google Developers Console.
var clientId = 'ID';
// Scope to use to access user's photos.
var scope = ['https://www.googleapis.com/auth/photos'];
var pickerApiLoaded = false;
var oauthToken;
// Use the API Loader script to load google.picker and gapi.auth.
function onApiLoad() {
gapi.load('auth', {'callback': onAuthApiLoad});
gapi.load('picker', {'callback': onPickerApiLoad});
}
function onAuthApiLoad() {
window.gapi.auth.authorize(
{
'client_id': clientId,
'scope': scope,
'immediate': false
},
handleAuthResult);
}
function onPickerApiLoad() {
pickerApiLoaded = true;
createPicker();
}
function handleAuthResult(authResult) {
if (authResult && !authResult.error) {
oauthToken = authResult.access_token;
createPicker();
}
}
// Create and render a Picker object for picking user Photos.
function createPicker() {
if (pickerApiLoaded && oauthToken) {
var picker = new google.picker.PickerBuilder().
enableFeature(google.picker.Feature.MULTISELECT_ENABLED).
addView(google.picker.ViewId.PDFS).
setOAuthToken(oauthToken).
setDeveloperKey(developerKey).
setCallback(pickerCallback).
build();
picker.setVisible(true);
}
}
// A simple callback implementation.
function pickerCallback(data) {
var url = 'nothing';
if (data[google.picker.Response.ACTION] == google.picker.Action.PICKED) {
var doc = data[google.picker.Response.DOCUMENTS][0];
url = doc[google.picker.Document.URL];
var message = url;
document.getElementById('result').innerHTML = message;
}
var longUrl=message;
var request = gapi.client.urlshortener.url.insert({
'resource': {
'longUrl': longUrl
}
});
request.execute(function(response)
{
if(response.id != null)
{
str ="<a href='"+response.id+"'>"+response.id+"</a>";
document.getElementById("output").innerHTML = str;
Parse.initialize("ID", "ID");
var PDFUpload = new Parse.Object("Scan");
PDFUpload.set("PDFDocument", response.id);
PDFUpload.save(null,
{
success: function(uploadResult) {
// Execute any logic that should take place after the object is saved.
},
error: function(uploadResult, error) {
// Execute any logic that should take place if the save fails.
// error is a Parse.Error with an error code and description.
alert('Failed to create new object, with error code: ' + error.description);
}
});
}
else
{
alert("error: creating short url");
}
});
}
function load()
{
gapi.client.setApiKey('ID'); //get your ownn Browser API KEY
gapi.client.load('urlshortener', 'v1',function(){});
}
window.onload = load;
</script>
<script src="https://apis.google.com/js/client.js"> </script>
</head>
<body>
<div id="result"></div>
<div id="demo">
<div id="output">
<!-- The Google API Loader script. -->
<script type="text/javascript" src="https://apis.google.com/js/api.js?onload=onApiLoad"></script>
</body>
</html>
特别是，我试图缩短存储到Parse中的URL：
var longUrl=message;
var request = gapi.client.urlshortener.url.insert({
'resource': {
'longUrl': longUrl
}
});
request.execute(function(response)
{
if(response.id != null)
{
str ="<a href='"+response.id+"'>"+response.id+"</a>";
document.getElementById("output").innerHTML = str;
Parse.initialize("ID", "ID");
var PDFUpload = new Parse.Object("Scan");
PDFUpload.set("PDFDocument", response.id);
PDFUpload.save(null,
{
success: function(uploadResult) {
// Execute any logic that should take place after the object is saved.
},
error: function(uploadResult, error) {
// Execute any logic that should take place if the save fails.
// error is a Parse.Error with an error code and description.
alert('Failed to create new object, with error code: ' + error.description);
}
});
}
else
{
alert("error: creating short url");
}
});
非常感谢任何帮助
更新： 请试试这段代码。它会从您插入的输入值缩短网址。在输入字段中输入示例yahoo.ca的意义上，一旦你点击转换它就会缩短为一个url并存储在解析中。这是成功的，但我想将其集成到我的代码中，其中url源自用户从其google驱动器中选择的项目生成的url：
<html>
<head>
</head>
<script src="http://www.parsecdn.com/js/parse-1.2.12.min.js"></script>
<script type="text/javascript">
function makeShort()
{
var longUrl=document.getElementById("longurl").value;
var request = gapi.client.urlshortener.url.insert({
'resource': {
'longUrl': longUrl
}
});
request.execute(function(response)
{
if(response.id != null)
{
str ="<a href='"+response.id+"'>"+response.id+"</a>";
document.getElementById("output").innerHTML = str;
Parse.initialize("ID", "ID");
var PDFUpload = new Parse.Object("Scan");
PDFUpload.set("PDFDocument", response.id);
PDFUpload.save(null,
{
success: function(uploadResult) {
// Execute any logic that should take place after the object is saved.
},
error: function(uploadResult, error) {
// Execute any logic that should take place if the save fails.
// error is a Parse.Error with an error code and description.
alert('Failed to create new object, with error code: ' + error.description);
}
});
}
else
{
alert("error: creating short url");
}
});
}
function load()
{
gapi.client.setApiKey('ID'); //get your ownn Browser API KEY
gapi.client.load('urlshortener', 'v1',function(){});
}
window.onload = load;
</script>
<script src="https://apis.google.com/js/client.js"> </script>
<body>
URL: <input type="text" id="longurl" name="url" value="yahoo.com" /> <br/>
<input type="button" value="Create Short" onclick="makeShort();" /> <br/> <br/>
<div id="output"></div>
</body>
</html>