iOS 总结网页常用的东西
webView与js交互常用JS语句:::
1、 //禁用用户选择
[self.webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.style.webkitUserSelect=‘none‘;"];
2、//禁用长按弹出框
[webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.style.webkitTouchCallout=‘none‘;"];
3、//获得UIWebView的URL地址
NSString *currentURL = [webView stringByEvaluatingJavaScriptFromString:@"document.location.href"]; NSLog(@"currentURL==%@",currentURL);
4、//获得UIWebView的标题
NSString *theTitle=[webView stringByEvaluatingJavaScriptFromString:@"document.title"]; NSLog(@"theTitle==%@",theTitle);
5、//通过name(获得/设置)页面元素的value值
NSString *js_email_ByName = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementsByName(‘email‘)[0].value=‘hello‘;"]; NSLog(@"js_email_ByName==%@",js_email_ByName); NSString *js_password_ByName = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementsByName(‘pwd‘)[0].value=‘hello‘;"]; NSLog(@"js_password_ByName==%@",js_password_ByName); NSString *js_phone_ByName = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementsByName(‘tel‘)[0].value=‘hello‘;"]; NSLog(@"js_phone_ByName==%@",js_phone_ByName);
6、//通过id(获得/设置)页面元素的value值
NSString *js_email_ById = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementByIdx_x_x(‘_iphone_email‘).value=‘asdfasdf‘;"]; NSLog(@"js_email_ById==%@",js_email_ById); NSString *js_password_ById = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementByIdx_x_x(‘_iphone_pwd‘).value=‘asdfasdf‘;"]; NSLog(@"js_password_ById==%@",js_password_ById); NSString *js_phone_ById = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementByIdx_x_x(‘_iphone_phone‘).value=‘asdfasdf‘;"]; NSLog(@"js_phone_ById==%@",js_phone_ById);
7、//提交表单
NSString *js_forms = [webView stringByEvaluatingJavaScriptFromString:@"document.forms[0].submit(); "]; NSLog(@"js_forms==%@",js_forms);
8、//获得body与body之间的HTML
NSString *allHTML = [webView stringByEvaluatingJavaScriptFromString:@"document.body.innerHTML"]; NSLog(@"allHTML: %@", allHTML);
9、//使UIWebView的输入框获得焦点(但是无法,弹出iphone键盘)
[webView stringByEvaluatingJavaScriptFromString:@"document.querySelector(‘#saySome‘).focus()"]; [webView stringByEvaluatingJavaScriptFromString:@"document.getElementByIdx_x("saySome").scrollIntoView("true")"];
10、//改变webview尺寸时对应改变web page尺寸(web page需要有对应的处理)
[webview stringByEvaluatingJavaScriptFromString: [NSString stringWithFormat:@"document.querySelector(‘meta[name=viewport]‘).setAttribute(‘content‘, ‘width=%d;‘, false); ",(int)webview.frame.size.width]];
11、//获取webview显示内容的高度
CGFloat documentWidth = [[wb stringByEvaluatingJavaScriptFromString:@"document.getElementById(‘content‘).offsetWidth"] floatValue]; CGFloat documentHeight = [[wb stringByEvaluatingJavaScriptFromString:@"document.getElementById(\"content\").offsetHeight;"] floatValue];
12、//通过id获取内容
NSString *js = @"document.getElementById(‘lg‘).innerHTML"; NSString *pageSource = [webView stringByEvaluatingJavaScriptFromString:js]; NSLog(@"pagesource:%@", pageSource);
13、//改变字体大小
[self.webView stringByEvaluatingJavaScriptFromString:@"document.getElementsByTagName(‘body‘)[0].style.webkitTextSizeAdjust= ’150%’"];
14、//改变webView中图片大小
[webView stringByEvaluatingJavaScriptFromString: @"var script = document.createElement(‘script‘);" "script.type = ‘text/javascript‘;" "script.text = \"function ResizeImages() { " "var myimg,oldwidth;" "var maxwidth = 300.0;" // UIWebView中显示的图片宽度 "for(i=0;i <document.images.length;i++){" "myimg = document.images[i];" "if(myimg.width > maxwidth){" "oldwidth = myimg.width;" "myimg.width = maxwidth;" "}" "}" "}\";" "document.getElementsByTagName(‘head‘)[0].appendChild(script);"];
15、//删除所有链接
[webView stringByEvaluatingJavaScriptFromString:@"$(document).ready(function () {$(\"a\").removeAttr(\"href\");})"];
by Qzx