UIStepper in UIWebView - iOS

Question

I have been looking to use a UIStepper to increase and decrease font size in a WebView.

[webview stringByEvaluatingJavaScriptFromString:@"document.getElementsByTagName('body')[0].style.webkitTextSizeAdjust= '140%'"];

I want it so when I press the plus it takes it increases font size by 40% and when you press the minus it decreases the font size by 40%. So if I press the plus then the minus it takes it back to how it was and if i press the minus again it decreases the font size another 40%.

Thanks in advance!

Answer 1

textFontSize = 140;


NSString *jsString = [[NSString alloc] initWithFormat:@"document.getElementsByTagName('body')[0].style.webkitTextSizeAdjust= '%d%%'",
                      textFontSize];


[self.articleWebView stringByEvaluatingJavaScriptFromString:jsString];