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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have an element that already has a class: Now I want to create a Javascript function that will add a class to the div (not replace, but add). How can I do that? 回答1: Add a space plus the name of your new class to the className property of the element. First, put an id on the element so you can easily get a reference. Then var d = document.getElementById("div1"); d.className += " otherclass"; See also element.className on MDN . 回答2: The easiest way to do this without any framework is to use element.classList.add method. var element =

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: My code is at http://jsfiddle.net/mannagod/QT3v5/7/ . The JS is: function delay() { var INTENDED_MONTH = 7 //August // INTENDED_MONTH is zero-relative now = new Date().getDate(), rows = document.getElementById('scripture').rows; if (new Date().getMonth() != INTENDED_MONTH) { // need a value here less than 1, // or the box for the first of the month will be in Red now = 0.5 }; for (var i = 0, rl = rows.length; i I need to find a way to smooth the .scrollintoview() . Right now it 'jumps' to the highlighted row. I need it to smoothly transition

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How can one access NS attributes through using ElementTree? With the following: When I try to root.get('xmlns') I get back None, Category and Date are fine, Any help appreciated.. 回答1: I think element.tag is what you're looking for. Note that your example is missing a trailing slash, so it's unbalanced and won't parse. I've added one in my example. >>> from xml.etree import ElementTree as ET >>> data = ''' ''' >>> element = ET.fromstring(data) >>> element >>> element.tag '{http://www.foo.net/a}data' >>> element.attrib {'category': 'ABS',

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Still trying to answer this question , and I think I finally found a solution, but it runs too slow. var $div = $(' ') .css({ 'border': '1px solid red', 'position': 'absolute', 'z-index': '65535' }) .appendTo('body'); $('body *').live('mousemove', function(e) { var topElement = null; $('body *').each(function() { if(this == $div[0]) return true; var $elem = $(this); var pos = $elem.offset(); var width = $elem.width(); var height = $elem.height(); if(e.pageX > pos.left && e.pageY > pos.top && e.pageX topElement.zIndex) { topElement = { 'node'

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: <sjg:gridColumn name="progressivo" index="progressivo" title="ID" sortable="false" formatter="integer" width="40" displayTitle="false" editable="true" hidedlg="true" editrules="{edithidden:false}"/> I do NOT want to be able to edit the field, I do NOT want to show it in the edit Dialog, but I want to pass it to the action. My understanding is that I should use editable="true", hidedlg="true", editrules="{edithidden:false}" as specified above. But the field is still visible and editable in the dialog... anyone knows what is wrong with this

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: since I had this annoying issue for the 2nd time, I thought that asking would help. Sometimes I have to get Elements from XML documents, but the ways to do this are awkward. I’d like to know a python library that does what I want, a elegant way to formulate my XPaths, a way to register the namespaces in prefixes automatically or a hidden preference in the builtin XML implementations or in lxml to strip namespaces completely. Clarification follows unless you already know what I want :) Example-doc: What I can do The ElementTree API is the

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I wrote some code: function renderGreeting ( Elem : React . Component ) { return Hello , ! ; } I'm getting an error: JSX element type Elem does not have any construct or call signatures What does it mean? 回答1: This is a confusion between constructors and instances . Remember that when you write a component in React: class Greeter extends React . Component { render () { return Hello , { this . props . whoToGreet } ; } } You use it this way: return ; You don't use it this way: let Greet = new Greeter (); return ; In the first example

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I recently developed a live online chat room. I have everything working and secure but I want the div that the messages are stored in to autoscroll to the bottom. I managed to do that with this Javascript: window.setInterval(function() { var elem = document.getElementById('messages'); elem.scrollTop = elem.scrollHeight; }, 100); But with this, the user can't scroll upwards at all, it is always pushing them back down to the bottom of the div. What I want to happen is if the user is already at the bottom of the div, then when a new message

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Well, it works, it just doesn't produce anything worthwhile: elems = document.getElementById("itemsTable").getElementsByTagName("TR") for j = 0 to ubound(elems) - 1 ' stuff next Well, that won't work, apparently elems is an object, not an array like you'd get in that fancy javascript . I'm stuck with vbscript though. So what do I do to iterate all the rows in a table in vbscript? Edit: Yes, it's vbscript and it sucks. I don't have a choice here, so don't say "Use jQuery!!". 回答1: As you have correctly stated getElementsByTagName does not

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: Is there a solution for adding a class to the element in view when scrolling, and removing when out of view? This needs to work for a scrollable div. I have found a few solutions so far but they only seem to work for body... not a scrollable div. I am happy to use a plugin if you know one exists. Something like this... if ( $ ( '.journal-slider .each-slide img' ). inViewport () ) { $ ( this ). addClass ( 'in-view' ); } else { $ ( '.journal-slider .each-slide img' ). removeClass ( 'in-view' ); } Thanks, R 回答1: The plugin you are