w3c

问题 I am unable to import org.w3c.dom.NodeList package to Eclipse. It is showing The package org.w3c.dom is accessible from more than one module: <unnamed> , java.xml" error message in eclipse. Please let me know how to fix this ? Eclipse Version: Eclipse IDE for Enterprise Java Developers. Version: 2019-06 (4.12.0) Build id: 20190614-1200 Java version: java version "12.0.1" 2019-04-16 Java(TM) SE Runtime Environment (build 12.0.1+12) Java HotSpot(TM) 64-Bit Server VM (build 12.0.1+12, mixed mode

问题 I've followed the steps in this article to arrange my page for printing. However, only a couple of things seem to actually work. I can't get selectors such as @top-center to work at all in Chrome, Firefox or Opera, even though caniuse says it should work in most major browsers. Has this been quietly abandoned or deprecated? I'm pretty sure it's correct, but I'll post my CSS here for reference anyway: @page { @bottom-right { content: "..."; } } The content doesn't show up anywhere. 回答1: The WD

问题 I've followed the steps in this article to arrange my page for printing. However, only a couple of things seem to actually work. I can't get selectors such as @top-center to work at all in Chrome, Firefox or Opera, even though caniuse says it should work in most major browsers. Has this been quietly abandoned or deprecated? I'm pretty sure it's correct, but I'll post my CSS here for reference anyway: @page { @bottom-right { content: "..."; } } The content doesn't show up anywhere. 回答1: The WD

问题 when I make Web Application. As far as I know, There are three objects(BOM, DOM, built-in Objects) to javascript. If I want to manipulate DOM object. I refer DOM official documentation in w3c.org following this. https://www.w3.org/DOM/DOMTR If I want to know built-in objects. I can refer ECMA-262 documentation. It's very hard to read but it's official documentation. https://www.ecma-international.org/publications/standards/Ecma-262.htm If I want to control browser. I am googleing about BOM. I

问题 I have a web site and I have implemented my own request throttling for extra security. The problem is that, from one particular machine, I get duplicate requests, almost identical between them. The two requests are generated with millisecond time-difference between them. The original request is executed when some JavaScript code submits a form programmatically. The only difference between them is that the first request has this header defined: Sec-Fetch-User: ?1 Based on this page, it seems

问题 I have a web site and I have implemented my own request throttling for extra security. The problem is that, from one particular machine, I get duplicate requests, almost identical between them. The two requests are generated with millisecond time-difference between them. The original request is executed when some JavaScript code submits a form programmatically. The only difference between them is that the first request has this header defined: Sec-Fetch-User: ?1 Based on this page, it seems

问题 According to the spec, the value for grid-area is grid-line, which further uses custom-ident. Then MDN states that identifies cannot be put between quotes, which will make it a string value, which by itself is reasonable. But adding these all up, named grid areas must be accessed via an ID without quotes. See the comparison in the example below: .grid { display:grid; grid: "a b" 1fr "c d" 1fr / 1fr 1fr; } .foo { /* this works just fine, putting it to area b in upper right corner */ grid-area:

问题 According to the spec, the value for grid-area is grid-line, which further uses custom-ident. Then MDN states that identifies cannot be put between quotes, which will make it a string value, which by itself is reasonable. But adding these all up, named grid areas must be accessed via an ID without quotes. See the comparison in the example below: .grid { display:grid; grid: "a b" 1fr "c d" 1fr / 1fr 1fr; } .foo { /* this works just fine, putting it to area b in upper right corner */ grid-area:

问题 I've been trying to make my rows' elements' height be equal but still haven't succeeded. Do you have any ideas how to do that? Thanks, cheers. <div class="w3-row"> <div class="w3-container w3-quarter w3-green text-center matrix-element"> <h3><i class="material-icons">person</i> name</h3> <p>100112</p> </div> <div class="w3-container w3-quarter w3-green text-center matrix-element"> <h3><i class="material-icons">person</i> name</h3> <p>100112</p> </div> <div class="w3-container w3-quarter w3

问题 I've been trying to make my rows' elements' height be equal but still haven't succeeded. Do you have any ideas how to do that? Thanks, cheers. <div class="w3-row"> <div class="w3-container w3-quarter w3-green text-center matrix-element"> <h3><i class="material-icons">person</i> name</h3> <p>100112</p> </div> <div class="w3-container w3-quarter w3-green text-center matrix-element"> <h3><i class="material-icons">person</i> name</h3> <p>100112</p> </div> <div class="w3-container w3-quarter w3