Is this: var contents = document.getElementById('contents'); The same as this: var contents = $('#contents'); Given that jQuery is loaded? Not exactly!! document.getElementById('contents'); //returns a HTML DOM Object var contents = $('#contents'); //returns a jQuery Object In jQuery, to get the same result as document.getElementById , you can access the jQuery Object and get the first
这是: var contents = document.getElementById('contents'); 与此相同: var contents = $('#contents'); 鉴于jQuery加载? 不完全是!! document.getElementById('contents'); //returns a HTML DOM Object var contents = $('#contents'); //returns a jQuery Object 在jQuery中,为了得到与document.getElementById相同的结果,可以访问jQuery对象并获取对象中的第一个元素(记住JavaScript对象的作用类似于关联
This question already has an answer here: What are valid values for the id attribute in HTML? 21 answers HTML4 doesn't allow slashed as mentioned in this definition: ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), and periods (".")
这个问题在这里已经有了答案: 什么是HTML中的id属性的有效值? 21个答案 HTML4不允许像本定义中提到的那样剪切: ID和名称标记必须以字母([A-Za-z])开头,后面可以跟随任意数量的字母,数字([0-9]),连字符(“ - ”),下划线(“_”) ,冒号(“:”)和句点(“。”)。 IE仍然强制执行该标准。 如果你想使用url,而是将url存储在data-url属性中。
This question already has an answer here: What are valid values for the id attribute in HTML? 21 answers You can give margin for each ids CSS: #a2 { margin-left: 200px; } #a3 { margin-left: 400px; } HTML : <div id="main"> <div id="one" class="trip">Item1</div> <div id="two" class="trip">Item2</div> <div id="three" class="trip">Item3</div&g
这个问题在这里已经有了答案: 什么是HTML中的id属性的有效值? 21个答案 您可以为每个ID提供保证金 CSS: #a2 { margin-left: 200px; } #a3 { margin-left: 400px; } HTML: <div id="main"> <div id="one" class="trip">Item1</div> <div id="two" class="trip">Item2</div> <div id="three" class="trip">Item3</div> </div> 在这里演示 你不能用CSS
This question already has an answer here: What are valid values for the id attribute in HTML? 21 answers special characters in id of html tags 6 answers Escape the special chars $("#RSI\(3\,4\)").html("some text"); http://api.jquery.com/category/selectors/ To use any of the meta-characters ( such as !"#$%&'()*+,./:;<=>?@[]^`{|}~ ) as a literal part of a name, it must
这个问题在这里已经有了答案: 什么是HTML中的id属性的有效值? 21个答案 html标签中的特殊字符6个答案 逃离特殊字符 $("#RSI\(3\,4\)").html("some text"); http://api.jquery.com/category/selectors/ 要使用任何元字符(如!“#$%&'()* +,。/ :; <=>?@ [] ^`{|}〜)作为名称的文字部分,它必须用两个反斜杠转义:\例如,一个id =“foo.bar”的元素可以使用选择器$(“#foo \。bar”)。 也就是说,
This question already has an answer here: What are valid values for the id attribute in HTML? 21 answers Why can an element id not start with an integer? They can. But a CSS ID selector cannot start with a digit. Eg, this HTML is valid: <div id="1foo">testing 1 2 3</div> ...but this CSS is not valid: #1foo { color: green; } The CSS standard says that an id selector ca
这个问题在这里已经有了答案: 什么是HTML中的id属性的有效值? 21个答案 为什么元素ID不能以整数开头? 他们能。 但是CSS ID选择器不能以数字开头。 例如,这个HTML是有效的: <div id="1foo">testing 1 2 3</div> ...但是这CSS是无效的: #1foo { color: green; } CSS标准说,一个id选择器不能以数字开头: 一个ID选择符包含一个“数字符号”(U + 0023,#),后面跟着ID值,它必须是一个CSS标
This question already has an answer here: What are valid values for the id attribute in HTML? 21 answers In HTML5, the only restrictions are that the ID must be unique within the document, contain at least one character and contain no spaces. See http://www.w3.org/TR/2014/REC-html5-20141028/dom.html#the-id-attribute As other answers have pointed out, HTML 4 is more restrictive and specifi
这个问题在这里已经有了答案: 什么是HTML中的id属性的有效值? 21个答案 在HTML5中,唯一的限制是ID在文档中必须是唯一的,至少包含一个字符并且不包含空格。 请参阅http://www.w3.org/TR/2014/REC-html5-20141028/dom.html#the-id-attribute 正如其他答案指出的那样,HTML 4更具限制性,并指定了这一点 ID和名称标记必须以字母([A-Za-z])开头,后面可以跟随任意数量的字母,数字([0-9]),连字符(“ - ”),下划
How to convert colors in RGB format to Hex format and vice versa? For example, convert '#0080C0' to (0, 128, 192) . The following will do to the RGB to hex conversion and add any required zero padding: function componentToHex(c) { var hex = c.toString(16); return hex.length == 1 ? "0" + hex : hex; } function rgbToHex(r, g, b) { return "#" + componentToHex(r) + componentT
如何将RGB格式的颜色转换为十六进制格式,反之亦然? 例如,将'#0080C0'转换为(0, 128, 192) '#0080C0' (0, 128, 192) 。 以下将做RGB到十六进制转换并添加任何所需的零填充: function componentToHex(c) { var hex = c.toString(16); return hex.length == 1 ? "0" + hex : hex; } function rgbToHex(r, g, b) { return "#" + componentToHex(r) + componentToHex(g) + componentToHex(b); }
Why this code doesn't work? <!DOCTYPE html> <html> <head> <title> Home </title> </head> <body id = "b" bgcolor = "lightblue"> <button onclick = "document.getElementById('b').bgcolor = 'lightgreen'"> Light Green </button> </body> </html> I tried to change text attribute value in the body tag
为什么这段代码不起作用? <!DOCTYPE html> <html> <head> <title> Home </title> </head> <body id = "b" bgcolor = "lightblue"> <button onclick = "document.getElementById('b').bgcolor = 'lightgreen'"> Light Green </button> </body> </html> 我试图改变body标签中的文本属性值,它的工作原理,但由于某种原
Alright, so I made this function: String.prototype.colorize = function() { return this.replace(/&([0-9]{1,3})/gi, function($0, $1, offset) { return (offset > 0 ? "</span>" : "") + '<span style="color: hsl(' + $1 + ', 100%, 50%)">'; }); }; It basically turns a plain text string into html spans with colors so that, for example &240Hello becomes blue, using t
好吧,所以我做了这个功能: String.prototype.colorize = function() { return this.replace(/&([0-9]{1,3})/gi, function($0, $1, offset) { return (offset > 0 ? "</span>" : "") + '<span style="color: hsl(' + $1 + ', 100%, 50%)">'; }); }; 它基本上将纯文本字符串转换为具有颜色的html跨度,以便例如使用HSL颜色比例使&240Hello变为蓝色。 现在的问题是,我需要它在字符串的
有没有一种简单的方法在JavaScript中取出一串html并去掉html? If you're running in a browser, then the easiest way is just to let the browser do it for you... function strip(html) { var tmp = document.createElement("DIV"); tmp.innerHTML = html; return tmp.textContent || tmp.innerText || ""; } Note: as folks have noted in the comments, this is best avoided if you don't control the
有没有一种简单的方法在JavaScript中取出一串html并去掉html? 如果你在浏览器中运行,那么最简单的方法就是让浏览器为你做这件事...... function strip(html) { var tmp = document.createElement("DIV"); tmp.innerHTML = html; return tmp.textContent || tmp.innerText || ""; } 注意:正如人们在评论中指出的那样,如果您不控制HTML的源代码(例如,不要在任何可能来自用户输入的内容上运行此操作),最好避免这