I'm trying to execute some JS before the page's onLoad event fires.
But I'm having trouble successfully calling stringByEvaluatingJavaScriptFromString in the webViewDidStartLoad delegate method.
To reproduce the issue, you can use the following code.
Delegate implementation:
-(void)webViewDidStartLoad:(UIWebView *)webView {
[webView stringByEvaluatingJavaScriptFromString:#"window.valueHasBeenSet=true"];
}
View this HTML:
<html>
<head></head>
<body>
<script type="text/javascript" charset="utf-8">
if (window.valueHasBeenSet)
{
// We enter this branch the first time
document.write('<h3>Everything is OK. Value has been set.</h3>');
}
else
{
// We incorrectly enter this branch on reloads
document.write('<h3>Error. Value has not been set.</h3>');
}
</script>
Reload
</body>
</html>
This page works on the first view ("Everything is OK.") but fails on all reloads, regardless of the reload method. As you'd probably expect, this doesn't work in the shouldStartLoadWithRequest delegate, either.
I also tried executing the javascript immediately following webViewDidStartLoad with performSelector:withObject:afterDelay:0, to no avail.
Any ideas?
I managed to make it work using a NSTimer
- (void)viewDidLoad {
timer = [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:#selector(update) userInfo:nil repeats:YES];
}
-(void)update{
if (Progress.progress <= 1.0) {
[website stringByEvaluatingJavaScriptFromString:#"window.valueHasBeenSet=true"];
}
}
You have to do something like this:
Delegate implementation:
- (void)webViewDidFinishLoad:(UIWebView *)webView {
NSLog(#"webViewDidFinishLoad");
[webView stringByEvaluatingJavaScriptFromString:#"foo(true);"];
}
.html file:
<html>
<head></head>
<script type="text/javascript" charset="utf-8">
function foo (value) {
if (value)
{
// We enter this branch the first time
document.write('<h3>Everything is OK. Value has been set.</h3>');
}
else
{
// We incorrectly enter this branch on reloads
document.write('<h3>Error. Value has not been set.</h3>');
}
document.write('Reload');
}
</script>
<body>
</body>
</html>
Related
My component is loading fine but the styles are not loading, nor are the events firing. I am following the documentation and no errors are being thrown but it seems I might be missing something fundamental here?
View template rendered with res.marko:
import Explanation from "./components/explanation.marko";
<!DOCTYPE html>
<html lang="en">
<head>
...
</head>
<body>
...
<include(Explanation, input.explanation) />
...
</body>
</html>
explanation.marko file:
class {
onExplanationClick() {
console.log("Explanation clicked");
}
}
style {
.explanation-paragraph {
color: red;
}
}
<div id="explanation" on-click('onExplanationClick')>
<for (paragraph in input.content)>
<p class="explanation-paragraph">${paragraph}</p>
</for>
</div>
Server side:
app.get("/explanation/:id", async function(req, res) {
var explanation = await findExplanation(req.params.id);
var template = require("../../views/explanation/explanation.marko");
res.marko(template, { explanation, user: req.user });
});
Also using marko/node-require and marko/express.
You will need to integrate a module bundler/asset pipeline. In the sample marko-express app we are using Lasso (an asset pipeline + JavaScript module bundler).
There's also another sample app that integrates Webpack: https://github.com/marko-js-samples/marko-webpack
The Marko team supports both Lasso and Webpack, but we recommend Lasso because it is simpler and requires minimal configuration.
Please take a look at the marko-express app and feel free to ask questions in our Gitter chat room if you get stuck: https://gitter.im/marko-js/marko
I have a problem with the AccountKit JavaScript SDK ,
When i integrate it with my website it works fine with Firefox but in Chrome it works fine first, but when i try to use it again it gives me this error:
'AccountKit SDK was not initialized. Call AccountKit.init first.'
Any idea?
The idea is to add the initialization immediately after the sdk loads. Seems like when there is much data/code to load before the initialization, it sometimes hangs.
ie
<script src="https://sdk.accountkit.com/en_US/sdk.js"></script>
<script type="text/javascript">
AccountKit_OnInteractive = function(){
AccountKit.init(
{
appId:youID,
state:"{{csrf}}",
version:"v1.1"
}
);
console.log("{{csrf}}")
};
</script>
NOT
<script src="https://sdk.accountkit.com/en_US/sdk.js"></script>
// some code
<script type="text/javascript">
AccountKit_OnInteractive = function(){
AccountKit.init(
{
appId:youID,
state:"{{csrf}}",
version:"v1.1"
}
);
console.log("{{csrf}}")
};
</script>
I have same issue and I solve it. Just call your AccountKit.init your main file(index.html) where your app hold all scripts. From me it looks like this:
index.html
<script src="https://sdk.accountkit.com/en_US/sdk.js"></script>
<script type="text/javascript">
AccountKit_OnInteractive = function(){
AccountKit.init(
{
appId:youID,
state:"{{csrf}}",
version:"v1.1"
}
);
console.log("{{csrf}}")
};
</script>
Can you add in the code that you're using?
https://developers.facebook.com/docs/accountkit/web
You do need to call AccountKit.init as part of the setup.
In my shared layout I would like to have a "scripts" section to stuff it with all the scripts needed for page functionality.
Layout.cshtml
<html>
<head>
<title>Test</title>
<script src="#Url.Content("~/Scripts/jquery-2.0.3.js")" type="text/javascript"> </script>
#RenderSection("Scripts", required: false)
</head>
<body>
#RenderBody()
</body>
</html>
So, my view loads a specific javascript, and I want it to be in "scripts" section, and it's working.
Index.cshtml
#model PlatformaPu.Areas.Inventura.Models.Home.Index
#section Scripts {
<script src="#Url.Content("~/Areas/Inventura/Scripts/Home/Index.js")" type="text/javascript"></script>
}
{CONTENT REMOVED FOR BREVITY}
#section Footer {
#Html.Partial("~/Views/Shared/_AppSelector.cshtml", Model.AppSelector)
}
Finally, my view renders a partial and I have a javascript that this partial loads.
_AppSelector.cshtml
#model PlatformaPu.Models.Shared._AppSelector
#section Scripts {
<script src="#Url.Content("~/Scripts/Shared/_AppSelector.js")" type="text/javascript"></script>
}
{CONTENT REMOVED FOR BREVITY}
...and this is NOT working - javascript tag is NOT rendered in "scripts" section
How can I do this?
As discussed in this question, it is not possible to use sections in a partial view:
Sections don't work in partial views and that's by design. You may use some custom helpers to achieve similar behavior, but honestly it's the view's responsibility to include the necessary scripts, not the partial's responsibility. I would recommend you using the #scripts section of the main view to do that and not have the partials worry about scripts.
You should add the script reference to the main view that references the partial.
This is my first answer!
I've being working with webforms for years and now i'm dealing with MVC 5. Bit hard.
Perhaps is the wrong solution, but works :)
In Layout.cshtml. add second "ScriptsPartial" section
#RenderSection("ScriptsPartial", required: false)
In Index.cshtml, add ", new ViewDataDictionary(ViewData) { { "ViewPage", this } }"
#section Footer {
#Html.Partial("~/Views/Shared/_AppSelector.cshtml", Model.AppSelector, new ViewDataDictionary(ViewData) { { "ViewPage", this } })
}
In _AppSelector.cshtml, remove this
#section Scripts {
<script src="#Url.Content("~/Scripts/Shared/_AppSelector.js")" type="text/javascript"></script>
}
In _AppSelector.cshtml, add this in any place
#{
if (ViewData.ContainsKey("ViewPage"))
{
System.Web.Mvc.WebViewPage viewPage = (System.Web.Mvc.WebViewPage)ViewData["ViewPage"];
viewPage.DefineSection("ScriptsPartial", () =>
{
// viewPage.Write(Scripts.Render("~/AppSelector/Scripts")); // If you use a Bundle
viewPage.WriteLiteral("<script src=\"" + Url.Content("~/Scripts/Shared/_AppSelector.js") + "\" type=\"text/javascript\"></script>");
});
}
}
Just "send" the View to the PartialView (no Parent property like in WebForms?) and use it to add content to "ScriptsPartial" section.
"ScriptsPartial" is needed because DefineSection throws an error "section already defined: Scripts"
So, no more than one PartialView can use "ScriptsPartial" section... not so good solution.
Best regards,
Paco Ferre
My button handler gets called twice - once for mousedown/touchstart and a second time for mouseup/touchend.
This happens both on my iPhone device and in my Chrome Browser.
Using ST 1.1
I haven't found any references to this problem which seems to suggest that something in my env is wrong, but I'm running out of things to check ...
Examining the event objects passed to the handler in Chrome DevTools I can see that they're both simulated "tap" events, the first originating from "mousedown" and the second from "mouseup".
Any ideas ?
EDIT:
I've found out that this happens when I add a call (even with an empty handler) to Ext.EventManager.onDocumentReady.
If I remove this call, I only get clicks on "mouseup" as expected.
If I replace it with Ext.onReady it works !!!
This is really bewildering since one is an alias for the other ...
code reproduction:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<script src="resources/Sencha/sencha-touch-debug.js" type="text/javascript"></script>
<link href="resources/Sencha/sencha-touch.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
MyPanel = Ext.extend(Ext.Panel, {
fullscreen: true,
initComponent: function() {
this.items = [{
xtype: 'button',
text: 'Login',
handler: this.myHandler,
scope: this
}];
MyPanel.superclass.initComponent.apply(this, arguments);
},
myHandler: function(b, e) {
console.log(e.event.type);
}
});
Ext.EventManager.onDocumentReady(function() {
});
Ext.onReady(function() {
new MyPanel();
});
</script>
</head>
<body></body>
</html>
I've had this problem with with undecorated link nodes. I managed to fix it by eating touchend events on A nodes:
document.addEventListener('touchend', function(e) {
e.preventDefault() if e.target.localName == 'a')
}, true);
This isn't exactly your problem, but chances are that your problem is simliar, caused by both touch and click events being sent to the widget. Here's a method I use to spam my console with as much of all events being sent (that's raw DOM events, not Ext events) as possible. It's useful for troubleshooting low-level problems like this.
I see many references to this error on the web, but they are not helping me. I guess i am new enough to this that i need a specific answer for my problem.
I am attaching the first portion of code on a page that i am running. the last line i show is the line that is creating the error stating in the title. Please let me know if you have any suggestions.
Thank you!
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>CDI Web Portal</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<script src="js\dojo\dojo.js" type="text/javascript"></script>
<script type="text/javascript" src="http://www.google.com/jsapi?key=ABQIAAAA5a4NhilcmrdMQ5e3o22QWRQWrGbhbxAguaJ-a4SLWYiya7Z2NRTDfQBdxmHdf5ydkZYLZTiz1tDXfg"></script>
<script type="text/javascript" src="ge-poly-fit-hack.js"></script>
<script type="text/javascript" src="kmldomwalk.js"></script>
<style type="text/css">
#import "js/dijit/themes/tundra/tundra.css";
#import "js/dojo/resources/dojo.css";
</style>
<style type="text/css">#import "index.css";</style>
<script type="text/javascript"> dojo.ready(function() { dojo.byId("greeting").innerHTML += ", from " + dojo.version; }); </script>
<script type="text/javascript">
// <![CDATA[
djConfig = { parseOnLoad: true };
// google.load("dojo", "1.6.1");
google.load("maps", "2");
google.load("earth", "1");
var g_ge;
var g_earthDisabled = false;
var g_kmlObject;
google.setOnLoadCallback(function() {
dojo.require('dijit.layout.BorderContainer');
dojo.require('dijit.layout.SplitContainer');
dojo.require('dijit.layout.ContentPane');
dojo.require('dijit.Tree');
//dojo.require('CheckboxTree');
dojo.require('dijit.form.CheckBox');
dojo.require('dijit.form.Button');
dojo.require('dijit.form.TextBox');
dojo.require('dojo.data.ItemFileWriteStore');
dojo.require('dojo.parser');
dojo.require('dojo.cookie');
dojo.require('dojo.fx');
dojo.addOnLoad(function() {
// load checkboxtree
var scpt = document.createElement('script');
scpt.src = "dijit.CheckboxTree.js";
document.body.appendChild(scpt);
{ dijit.byId('load-button').setDisabled(true) };
// build earth
google.earth.createInstance(
'map3d',
function(ge) {
g_ge = ge;
g_ge.getWindow().setVisibility(true);
g_ge.getNavigationControl().setVisibility(ge.VISIBILITY_AUTO);
g_ge.getLayerRoot().enableLayerById(g_ge.LAYER_BORDERS, true);
g_ge.getLayerRoot().enableLayerById(g_ge.LAYER_BUILDINGS, true);
dijit.byId('load-button').setDisabled(false);
checkAutoload();
},
function() {
g_earthDisabled = true;
dijit.byId('load-button').setDisabled(true);
From your comment, you used declarative syntax to create the dijit, i.e. <button id="load-button" dojoType="dijit.form.Button" onclick="loadKml();">. If the declarative syntax is used, the dijit is actually created after the page is loaded. So you should put the code to use the dijit in the Dojo's load callback, i.e. inside of dojo.addOnLoad callback.
But your code is bad formatted and mingled with Google Maps load callback, it's not easy to inspect the code. My suggestion would be to wrap the dijit.byId('load-button').setDisabled(true); with dojo.addOnLoad, like below:
dojo.addOnLoad(function() {
dijit.byId('load-button').setDisabled(true);
});
It means that you've got a dojo object rather than a dijit object -- or possibly no object named load-button at all, since it's not clear from this where load-button is being created. Make sure there is an object with id="load-button" that was created with dijit.