cross-browser

问题 In my project, I am trying to add HTML tag letter ( < and > ) dynamically to a contenteditable div. Whenever user is pressing alphanumeric character, I am appending an empty span element which is used for calculating the position of the caret in contenteditable div. The problem is that when I type some words like following: when < and press a alphanumeric character like b (which calls a function to append a span element), The contenteditable div is showing just when instead of when <b . When

问题 For now I'm writing a complex of laboratory works about coding in JavaScript. I know that there is a construction like if ('field' in object) { /* Do something with object.field */ } to be used to determine that a variable called field really exists in object even if it equals to undefined. And my Firefox Developer Edition 44 is able to determine if there is a field in an array like this: if (0 in array) { /* Do something with first element */ } The question : is this method legal? Is it a

问题 Where can i find which browsers support media queries inside the media attribute of a link tag? EXAMPLE: <link rel='stylesheet' media='only screen and (orientation : portrait)' href='portrait.css' /> 回答1: According to MDN: Browsers not supporting the CSS3 Media Queries won't necessarily recognize the adequate link; do not forget to set fallback links, the restricted set of media queries defined in HTML 4*. CSS3 media query support as reported by caniuse *Restricted media queries defined for

问题 I am currently experiencing the exact same problem as here: Multiple File Upload with jQuery [removing file then adding it again]. So far I have managed this: function UploadFile(ajaxUrl, event) { if ($("p[id=alertFileCount]").is(":visible")) $("p[id=alertFileCount]").hide(); if (ajaxUrl == '' || ajaxUrl === undefined) { ShowErrorAlertUploadFiles(); return; } var fileList = []; var files = event.target.files; var $elem = $("a.attachMessageBtn"); if (ValidateFilesCount(files) === false) {

问题 This question already has answers here : Test browsers compatibility with my website (5 answers) Closed 4 years ago . What's the best way of checking the compatibility of a website with a specific version of a browser. For instance, I know how my website will be rendered on the latest version of FireFox which I've installed it before, but I don't know how it'd be shown on previous versions. IE has an option to render a page like previous version but firstly I've heard that it's not as the

问题 My ionic project was in beta version and now I updated to latest version . when I do ionic serve i got this error 404 . I have removed my add block extension in chrome and searched in google for cross issue and i have installed the cross but it is not working. iframe_mx.html:8 GET http://pizdopletka.club?&&&ref=http%3A%2F%2Flocalhost%3A8100%2F&u…HTML%2C%20like%20Gecko)%20Chrome%2F57.0.2987.98%20Mobile%20Safari%2F537.36 400 (Bad Request) affs?addonname=[ads]&clientuid=[Enter Client UID]&subID

问题 I'm styling placeholder text, and need to use several vendor-prefixed selectors so that it works in different browsers. When I put each of them as a separate code block, it works. However, if I use a comma-separated list of selectors instead of repeating the same CSS for each of them, it won't work. Can anyone explain? This works: input[type=text]::-webkit-input-placeholder { color: green; } input[type=text]::-moz-placeholder { color: green; } input[type=text]:-ms-input-placeholder { color:

问题 I want to make a page that satisfies the following conditions: it contains some texts in the first part and a code-mirror in the second part the texts in the first part are almost fixed (so their height is almost fixed), and I want the height of the code-mirror to fill exactly the rest of the page. If there are many texts in the code-mirror, then use scroll. Then, I make this plunker: <style> .rb { display: flex; flex-direction: column; height: 100%; } .rb .CodeMirror { flex: 1; } </style>

问题 I have the following HTML: <input id="outer" type="file" onchange="console.log('No.');"> <input id="inner" type="file" onchange="console.log('Yes!');" /> </input> Styled like such: #inner { cursor: pointer; position:absolute; opacity: 0; } #outer { position: relative; overflow: hidden; direction: ltr; } It looks like just a standard file input element, as the #inner input element is hidden and wrapped by the #outer one. My desired behavior is to see "Yes!" when I select a file, which I get

问题 I have a bootstrap carousel, and we would like to have a background fixed to create a "parallax effect" as you scroll down. The background-attachment works fine in all browsers except for Edge. If you scroll down in chrome, you'll notice the attached background working as desired. If you scroll down on Edge, the fixed background is ignored. I am using toe following browsers: Microsoft Edge 38.14393.0.0 Chrome 53.0.2785.116 m I created this fiddle to test it out: https://jsfiddle.net/5r73prux