ios - Javascript working on mac(chrome) but not in UIWebView -

ios - Javascript working on mac(chrome) but not in UIWebView -

document.getelementbyid('svin').value = "1fmdu34x6ruc10442"

is running within google chrome console on mac on webpage not within ipad uiwebview using:

[webview stringbyevaluatingjavascriptfromstring:javascript];

there no error log, can run javascripts on other websites similarly, there no problem in code. what possible reason , workaround?

i checked case , it's true code not working.

but created experiment - delayed evaluation. action worked.

what i've done first was:

- (void) test { [webview stringbyevaluatingjavascriptfromstring:javascript]; }

then used:

[self performselector:@selector(test) withobject:nil afterdelay:1];

and worked. suppose code evaluating before dom ready.

there many ways prevent such situation.

let's don't have access site, server-side javascripts (e.g. $(document).ready() {}) no go.

from ios can implement completion callback webview:

- (void)webviewdidfinishload:(uiwebview *)webview { [webview stringbyevaluatingjavascriptfromstring:javascript]; }

don't forget delegating webview , adding protocol parent class:

webview.delegate = self;

i've checked , worked. in case it's not working - it's wrong site makes dom not ready if ios webview thinks it's finished. if so, combine 2 resolutions i've described - evaluate js after delay in webviewdidfinishload callback:

- (void)webviewdidfinishload:(uiwebview *)webview { [self performselector:@selector(yourmethodwithjs) withobject:nil afterdelay:1]; }

i realize lastly advice it's not elegant approach that't have if you're not in charge of fixing site.

javascript ios uiwebview