有没有一种快速的方法来设置一个HTML文本输入( <input type=text /> )只允许数字按键(加'。')? JavaScript (the most reliable still) While this is simple, it will not let you use combination keys and other non-typeable keys. For a complete JavaScript solution that also supports input of type number and max length validation, consider using this Polyfill. HTML 5 with <!DOCTYPE
有没有一种快速的方法来设置一个HTML文本输入( <input type=text /> )只允许数字按键(加'。')? JavaScript (最可靠的) 虽然这很简单,但它不会让您使用组合键和其他不可键入的键。 对于支持类型号和最大长度验证输入的完整JavaScript解决方案,请考虑使用此Polyfill。 带有<!DOCTYPE html> HTML 5具有原生解决方案: <input type="number"> 请注意,它在某些浏览器中的行为
I am trying to create a jQuery hook which will read and set all colors as hex values instead of RGB. I have found a hook that will properly read the color as HEX but I am not sure on how to modify it to write CSS colors as HEX. So for example I would like $("h1").css('color', '#333333'); to inline style h1's with "style='color:#333333;'" instead
我正在尝试创建一个jQuery钩子,它将读取并设置所有颜色为十六进制值而不是RGB。 我发现一个钩子可以正确读取HEX的颜色,但我不确定如何修改它以将CSS颜色写为HEX。 例如,我想要$(“h1”).css('color','#333333'); 内联样式h1的“style ='color:#333333;'”而不是当前的RGB等价物。 我正在使用的钩子以十六进制形式返回读取颜色: $.cssHooks.color = { get: function(elem) { if (elem.c
This is my current code but as you see, whenever the font-size changes doe to the resizing of the browser width. The hover effect doesn't 1.5x the font-size, how can I make the hover effect dynamically take the current font-size of the text and double it up (1.5x) accordingly? ----> https://jsfiddle.net/054yzoux/ <--------- html <nav class="navbar-menu"> <ul id="l
这是我当前的代码,但正如您所看到的,每当字体大小更改都会改变浏览器宽度的大小。 悬停效果不是字体大小的1.5倍,我怎样才能使悬停效果动态获取文本的当前字体大小并相应地将其加倍(1.5倍)? ----> https://jsfiddle.net/054yzoux/ <--------- HTML <nav class="navbar-menu"> <ul id="list" class="test"> <li id="emph nav-home">Home</li> <li id="nav-po
I am using this code to dynamically resize text: function fontResize(){ $('.features').css('font-size', ($(window).width()/100) + 'px'); } fontResize(); $(window).resize( function () {fontResize()}); This works great for pulling the browser inwards but when i'm stretching the screen out on my 21" iMac, the text is too big for a set size DIV i have. how can i implement a solution wh
我正在使用此代码动态调整文本大小: function fontResize(){ $('.features').css('font-size', ($(window).width()/100) + 'px'); } fontResize(); $(window).resize( function () {fontResize()}); 这对于向内拉动浏览器非常有用,但是当我在21“iMac上伸出屏幕时,文本太大而无法达到DIV设置的大小。我如何实现一个解决方案,从而可以限制最大字体大小在文本上。我能否覆盖上面的这个函数,并把最大字体大小为13px?
Can Chrome's built-in JavaScript console display colors? I want errors in red, warnings in orange and console.log 's in green. Is that possible? 在Chrome和Firefox(+31)中,您可以在console.log消息中添加CSS: console.log('%c Oh my heavens! ', 'background: #222; color: #bada55'); Here is an extreme example with rainbow drop shadow. var css = "text-shadow: -1px -1px hsl(0,100%,50%), 1px
Chrome的内置JavaScript控制台能显示颜色吗? 我想要红色的错误,橙色的警告和绿色的console.log 。 那可能吗? 在Chrome和Firefox(+31)中,您可以在console.log消息中添加CSS: console.log('%c Oh my heavens! ', 'background: #222; color: #bada55'); 这是一个彩虹阴影的极端例子。 var css = "text-shadow: -1px -1px hsl(0,100%,50%), 1px 1px hsl(5.4, 100%, 50%), 3px 2px hsl(10.8, 100%, 50%), 5px 3px hsl(16.2
Here is a function I was working on to programmatically lighten or darken a hex color by a specific amount. Just pass in a string like "3F6D2A" for the color ( col ) and a base10 integer ( amt ) for the amount to lighten or darken. To darken, pass in a negative number (ie -20). The reason for me to do this was because of all the solutions I found, thus far, they seemed to over-compl
这是我正在努力的一个功能,以程序化的方式减轻或加深一个特定量的十六进制颜色。 只需传递像"3F6D2A"的颜色( col )和一个base10整数( amt )的字符串,以使亮度变暗或变暗。 变暗,传入负数(即-20)。 我之所以这样做是因为我发现的所有解决方案,迄今为止,它们似乎使问题过度复杂化。 我有一种感觉,它可以用几行代码完成。 如果您发现任何问题,请告诉我,或者做出任何调整以加快速度。 function Lighte
I've been working through the learnyoujs and stream-adventure tutorials: https://github.com/substack/stream-adventure https://github.com/rvagg/learnyounode#learn-you-the-nodejs-for-much-win I've gotten all the way through the first set and most of the way thorough the second, but I keep getting an odd error... usually I can get it to go away. Here's the command/error: DEV/ja
我一直在学习learnyoujs和流冒险教程: https://github.com/substack/stream-adventure https://github.com/rvagg/learnyounode#learn-you-the-nodejs-for-much-win 我已经完成了第一套,大部分都完成了第二套,但是我不断收到一个奇怪的错误......通常我可以让它消失。 这是命令/错误: DEV / javascript / streamAdventure»流冒险运行httpserver.js stream.js:94 throw er; // Unhandled stream error in pipe.
I am building a 3rd party widget We drop a script on a clients page and load some content. The problem I face is how do I secure my widget. As a thrid party widget I know there is no 100% way to secure it. But trying to work out a 'good enough' approach. I want to make it difficult for a non customer to just rip our script off their competitor site and use it on theirs. The solu
我正在构建第三方小部件 我们在客户端页面上放置一个脚本并加载一些内容。 我面临的问题是如何保护我的小部件。 作为第三方小部件,我知道没有100%的方法来保护它。 但试图找出一个“足够好”的方法。 我想让一个非客户很难将我们的脚本从他们的竞争对手的网站上撕下来并用在他们的脚本上。 我看到的解决方案是验证请求域(我知道这可能是欺骗性的,不知道我是否可以防范这一点)? 我看了一下其他的小工具,例如olar
While reading this SO post - Is there a version of JavaScript's String.indexOf() that allows for regular expressions?) I ponder which of the following two functions that look for the last (largest) whitespace group in txt run faster (or do they have negligible run-time difference) (function(str) { var result = /s+(?!.*s+)/.exec(str); return ((result)? result.index : -1); })(txt);
在阅读本文后 - 是否有允许正则表达式的JavaScript的String.indexOf()版本?)我想下面两个函数中查找txt最后一个(最大)空白组的速度更快的功能运行时差异可以忽略不计) (function(str) { var result = /s+(?!.*s+)/.exec(str); return ((result)? result.index : -1); })(txt); 要么 (function(str) { var regex = /s+/g; var result; var index = -1; while(result = regex.exec(str)) {
Following the question Extending String.prototype performance I am really intrigued, because just adding "use strict" to a String.prototype method improved performance 10 times. The explanation by bergi is short and does not explain it to me. Why there is such a dramatic difference between two almost identical methods, that only differ in "use strict" at the top? Can you ex
在扩展String.prototype性能的问题之后,我非常感兴趣,因为在String.prototype方法中添加"use strict"可以提高性能10倍。 bergi的解释很简短,并没有向我解释。 为什么两种几乎相同的方法之间存在如此巨大的差异,仅在顶部的"use strict"有所不同? 你能否更详细地解释这个理论? String.prototype.count = function(char) { var n = 0; for (var i = 0; i < this.length; i++) if (this[