你在test.html中使用的window.postMessage语法中的window其实是指你要发送的目标窗口对象 所以你这里直接拿window用就代表当前窗口,而你当前test.html的窗口中没有监听message事件,所以没办法触发test2.html中的alert 所以你应该这么做,把test.html中window.postMessage中的window用iframe的name来代替 receive.postMessage...
<iframe name="receive" id="iframe" src="test2.html" > </iframe> <script type="text/javascript"> window.onload=function() { window.postMessage('收到没', '*');//在这里发送数据 } </script> test2.html文件(接收页面) <script> window.addEventListener("message",function(e){ alert(e.dat...
method = get: 表单数据会被视为 CGI 或 ASP 的参数发送,即来访者输入的数据会附加在 URL 之后,用户端 直接发送至 服务器. 优点: 速度比 post 快 缺点: 数据长度有限 method = post: 表单数据和 URL 分开发送,用户端 通知 服务器 来读取数据. 优点: 没有数据长度限制 缺点: 速度比 get 慢 5.1.4 编...
传输文件数据的 HTML 表单必须使用 POST 方法和“multipart/form-data”操作进行配置。 在 Java™ API for RESTful Web Services (JAX-RS) 规范的 IBM 实现中执行的资源方法可以采用这两种方式的其中一种来接收此数据。 有关此任务 JAX-RS 2.0 和更高版本中 multipart/...
Another interesting new attribute is “autofocus,” which, as it sounds, lets you specify a single form field to automatically receive focus when a page loads. Only one field per page should hold this attribute; if multiple elements are marked up with autofocus, the first one with that declar...
The Enctype property of an HtmlForm control must be set to "multipart/form-data" for this control to work properly. The HtmlInputFile control does not have a built-in way to post back to the server. To upload the file to the server, use the SaveAs method of the System.Web.HttpPost...
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@ComposablefunPosts() {valctx=rememberPageContext()//Here, I'm assuming these params are always present, but you can use//`get` instead of `getValue` to handle the nullable case. Care should//also be taken to parse invalid values without throwing an exception.valpostId=ctx.route.params....
Represents an input form (inner tags of the form receive the data that will be submitted with the form) An HTML <form> element No appearance h:graphicImage Displays an image An HTML <img> element An image h:inputHidden Allows a page author to include a hidden variable in a page ...
Represents an input form (inner tags of the form receive the data that will be submitted with the form) An HTML <form> element No appearance h:graphicImage Displays an image An HTML <img> element An image h:inputFile Allows a user to upload a file An HTML <input type="fil...