Questions tagged [stringbyevaluatingjavascr]
32 questions
24
votes
3 answers
WkWebView Evaluatejavascript returns unsupported type error
I'm sending a value to javascript function and get a result. However, I'm getting "Error Domain=WKErrorDomain Code=5 "JavaScript execution returned a result of an unsupported type" UserInfo={NSLocalizedDescription=JavaScript execution returned a…
Emre Önder
- 2,408
- 2
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- 73
5
votes
2 answers
Loading large HTML string into UIWebView using javascript
Usually, when I want to load an HTML string into a webview using javascript, I use something like this...
NSString *htmlString = @"HTML String";
[webView stringByEvaluatingJavaScriptFromString:[NSString…
Sam J.
- 685
- 1
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3
votes
1 answer
How do I relate a UIWebView javascript exception's sourceId to a source file?
Short question: What does an exception's "sourceID" refer to, and how can I link it to the relevant source string/file?
Longer story:
I am running Javascript code in an iPhone native app through [UIWebView stringByEvaluatingJavaScriptFromString:].…
squelart
- 11,261
- 3
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2
votes
1 answer
iOS - play embedded YouTube video using Javascript
I hope this is possible. I've embedded a YouTube video within a UIWebView in my app. I am using the stringByEvaluatingJavaScriptFromString approach for using javascript. I want to press a button in the app and make the YouTube video start playing. …
Romes
- 3,088
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1
vote
1 answer
Passing a UISlider value into stringByEvaluatingJavaScriptFromString?
I have a UISlider and I'm trying to pass its value into a window.scrollBy string. Basically, I'm attempting user-configurable auto-scrolling of web content.
The actual scrolling is working, but I'm unable to pass a value into the JavaScript by using…
Luke
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1
vote
3 answers
load local image into UIWebView
I want to take a screenshot and then send to webview a local path for it, so it will show it. I know that webview could take images from NSBundle but this screenshots are created dynamically - can I add something to it by code?
I was trying it like…
Piotr
- 1,743
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1
vote
1 answer
Horrible performance when removing HTML element from UIWebView
I'm currently writing an iOS app that uses a UIWebView for surfing around pages. Sometimes I need to dynamically remove elements in the UIWebView using stringByEvaluatingJavaScriptFromString:, but this locks up the main UI for sometimes up to 2…
Erik Rothoff
- 4,826
- 9
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1
vote
1 answer
stringByEvaluatingJavaScript object has no ID
I am using self.webView.stringByEvaluatingJavaScript(from: "document.getElementById('username').value = \"\(username)\"") to put in a username, and it works fine.
A different webpage has this field:
ZiEiTiA
- 275
- 2
- 16
1
vote
0 answers
JavaScript exception for element height in WKWebView - Objective-C
I have following HTML structure to load in WKWebView :
...
//CSS code
...
...
//Javascript code
...
I'm loading above HTML as…
...
//Actual contents to display
...
iAkshay
- 1,143
- 1
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- 35
1
vote
0 answers
Calling javascript method from objective-C
I am working on calling javascript function from objective C.
I have a function like this:
var ABC = {
testingFunctionA : function() {
alert("Testing ABC!");
return "Hi";
},
testingFunctionB : function() {
…
LYS
- 51
- 3
1
vote
1 answer
How to display a JavaScript alert dialog in UIWebView using stringByEvaluatingJavaScriptFromString but not performSelectorOnMainThread in Swift?
In Objective-C, the following code works in viewDidLoad:
[self.myWebView performSelectorOnMainThread:
@selector(stringByEvaluatingJavaScriptFromString:)
withObject:@"alert('Test')" waitUntilDone:NO];
This code is suggested by this:
UIWebView…
ehhhuang
- 117
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1
vote
0 answers
Swift - stringByEvaluatingJavaScriptFromString - Upload image
Inside my application I give the user access to UIImagePickerController allowing them to either take a photo or choose from the library to save to a path in the DocumentDirectory:
//Obtaining Saving Path
let path:NSArray =…
Stuart Pattison
- 173
- 2
- 12
1
vote
2 answers
Is it possible to use stringByEvaluatingJavaScriptFromString with Javascript which references local files?
I want to use stringByEvaluatingJavaScriptFromString to run a javascript which references local files (in this case css files, but potentially js files too) which are on the device (in the Documents folder I guess?)...
NSString *theJS = [[NSString…
cannyboy
- 24,180
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1
vote
0 answers
Force A UIWebView Page to Press A Link?
Hello I have wrote an app that gets recent player information from xbox live and shows the players you are playing with in a game! I am trying to improve the app by having no need for the user to be on the web page and just gets the list of recent…
Charlie
- 222
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1
vote
1 answer
iOS stringByEvaluatingJavaScriptFromString issue
I have this code below that setup my UIWebView:
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
[webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"document.getElementById(\"image\").src=\"q%@.png\";",…
Matrosov Oleksandr
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