我试图使用以下样式的复选框:

<输入类型=“checkbox”样式=“border:2px点数:00f;显示:block;背景:ff0000;”/>

但是没有应用样式。复选框仍然显示其默认样式。我如何给它指定的样式?


当前回答

现代无障碍解决方案-使用重音颜色

使用新的重音-颜色属性,并确保满足适当的3:1对比度,以确保可访问性。这也适用于单选按钮。

.red-input { 颜色:# 9 d3039; 高度:20 px;/*不需要*/ 宽度:20 px;/*不需要*/ } <input class="red-input" type="checkbox" /> <!—单选按钮示例—> <input class="red-input" type="radio" />


旧的答案,我只建议如果你需要更多的定制比上述提供:

我一直在翻看这些答案,大量的答案只是将可访问性排除在门外,并以多种方式违反WCAG。我添加了单选按钮,因为大多数情况下,当你使用自定义复选框时,你也需要自定义单选按钮。

小提琴:

复选框-纯CSS -免费的第三方库 单选按钮-纯CSS -免费的第三方库 复选框*使用FontAwesome,但可以很容易地与Glyphicons等交换

虽然迟到了,但不知何故,在2019年、2020年和2021年,这仍然很困难,所以我添加了我的三个解决方案,它们易于使用和使用。

这些都是免费的JavaScript,可访问的,和外部库免费*…

如果你想要即插即用,只要复制样式表从fiddles,编辑CSS中的颜色代码,以适应你的需要,并在你的方式。如果需要,可以为复选框添加自定义svg复选标记图标。我为那些不喜欢css的人添加了很多注释。

如果你有很长的文本或一个小的容器,并且在复选框或单选按钮输入下遇到文本换行,那么就像这样转换为div。

更详细的解释: 我需要一个解决方案,不违反WCAG,不依赖于JavaScript或外部库,不打破键盘导航,如标签或空格键选择,允许焦点事件,一个解决方案,允许禁用复选框,既选中和未选中,最后一个解决方案,我可以自定义的复选框的外观,但我想与不同的背景颜色,边界半径,svg背景等。

我结合了@Jan turoironic的回答,想出了我自己的解决方案,看起来效果不错。我已经做了一个单选按钮小提琴,使用了许多相同的代码从复选框,以使此工作与单选按钮。

我仍然在学习无障碍,所以如果我错过了一些东西,请留下评论,我会尽量纠正它。

这是我的复选框的代码示例:

input[type="checkbox"] { position: absolute; opacity: 0; z-index: -1; } /* Text color for the label */ input[type="checkbox"]+span { cursor: pointer; font: 16px sans-serif; color: black; } /* Checkbox un-checked style */ input[type="checkbox"]+span:before { content: ''; border: 1px solid grey; border-radius: 3px; display: inline-block; width: 16px; height: 16px; margin-right: 0.5em; margin-top: 0.5em; vertical-align: -2px; } /* Checked checkbox style (in this case the background is green #e7ffba, change this to change the color) */ input[type="checkbox"]:checked+span:before { /* NOTE: Replace the url with a path to an SVG of a checkmark to get a checkmark icon */ background-image: url('https://cdnjs.cloudflare.com/ajax/libs/ionicons/4.5.6/collection/build/ionicons/svg/ios-checkmark.svg'); background-repeat: no-repeat; background-position: center; /* The size of the checkmark icon, you may/may not need this */ background-size: 25px; border-radius: 2px; background-color: #e7ffba; color: white; } /* Adding a dotted border around the active tabbed-into checkbox */ input[type="checkbox"]:focus+span:before, input[type="checkbox"]:not(:disabled)+span:hover:before { /* Visible in the full-color space */ box-shadow: 0px 0px 0px 2px rgba(0, 150, 255, 1); /* Visible in Windows high-contrast themes box-shadow will be hidden in these modes and transparency will not be hidden in high-contrast thus box-shadow will not show but the outline will providing accessibility */ outline-color: transparent; /*switch to transparent*/ outline-width: 2px; outline-style: dotted; } /* Disabled checkbox styles */ input[type="checkbox"]:disabled+span { cursor: default; color: black; opacity: 0.5; } /* Styles specific to this fiddle that you do not need */ body { padding: 1em; } h1 { font-size: 18px; } <h1> NOTE: Replace the url for the background-image in CSS with a path to an SVG in your solution or CDN. This one was found from a quick google search for a checkmark icon cdn </h1> <p>You can easily change the background color, checkbox symbol, border-radius, etc.</p> <label> <input type="checkbox"> <span>Try using tab and space</span> </label> <br> <label> <input type="checkbox" checked disabled> <span>Disabled Checked Checkbox</span> </label> <br> <label> <input type="checkbox" disabled> <span>Disabled Checkbox</span> </label> <br> <label> <input type="checkbox"> <span>Normal Checkbox</span> </label> <br> <label> <input type="checkbox"> <span>Another Normal Checkbox</span> </label>

其他回答

呵!所有这些变通方法让我得出结论,如果你想要设置HTML复选框的样式,那么它就很糟糕。

作为一个警告,这不是一个CSS实现。我只是想分享一下我想出的解决办法以防其他人会觉得有用。


我使用HTML5 canvas元素。

这样做的好处是您不必使用外部图像,并且可能节省一些带宽。

缺点是,如果浏览器由于某种原因不能正确地呈现它,那么就没有退路了。不过,在2017年,这是否仍然是一个值得商榷的问题。

更新

我发现旧的代码很难看,所以我决定重写一遍。

Object.prototype.create = function(args){
    var retobj = Object.create(this);

    retobj.constructor(args || null);

    return retobj;
}

var Checkbox = Object.seal({
    width: 0,
    height: 0,
    state: 0,
    document: null,
    parent: null,
    canvas: null,
    ctx: null,

    /*
     * args:
     * name      default             desc.
     *
     * width     15                  width
     * height    15                  height
     * document  window.document     explicit document reference
     * target    this.document.body  target element to insert checkbox into
     */
    constructor: function(args){
        if(args === null)
            args = {};

        this.width = args.width || 15;
        this.height = args.height || 15;
        this.document = args.document || window.document;
        this.parent = args.target || this.document.body;
        this.canvas = this.document.createElement("canvas");
        this.ctx = this.canvas.getContext('2d');

        this.canvas.width = this.width;
        this.canvas.height = this.height;
        this.canvas.addEventListener("click", this.ev_click(this), false);
        this.parent.appendChild(this.canvas);
        this.draw();
    },

    ev_click: function(self){
        return function(unused){
            self.state = !self.state;
            self.draw();
        }
    },

    draw_rect: function(color, offset){
        this.ctx.fillStyle = color;
        this.ctx.fillRect(offset, offset,
                this.width - offset * 2, this.height - offset * 2);
    },

    draw: function(){
        this.draw_rect("#CCCCCC", 0);
        this.draw_rect("#FFFFFF", 1);

        if(this.is_checked())
            this.draw_rect("#000000", 2);
    },

    is_checked: function(){
        return !!this.state;
    }
});

这里是一个工作演示。

新版本使用原型和差分继承来创建一个用于创建复选框的高效系统。创建复选框:

var my_checkbox = Checkbox.create();

这将立即将复选框添加到DOM并连接事件。查询复选框是否勾选。

my_checkbox.is_checked(); // True if checked, else false

同样需要注意的是,我去掉了循环。

更新2

在上次更新中我忽略了一点,那就是使用canvas比仅仅创建一个你想要的复选框有更多的优势。如果您愿意,还可以创建多状态复选框。

Object.prototype.create = function(args){
    var retobj = Object.create(this);

    retobj.constructor(args || null);

    return retobj;
}

Object.prototype.extend = function(newobj){
    var oldobj = Object.create(this);

    for(prop in newobj)
        oldobj[prop] = newobj[prop];

    return Object.seal(oldobj);
}

var Checkbox = Object.seal({
    width: 0,
    height: 0,
    state: 0,
    document: null,
    parent: null,
    canvas: null,
    ctx: null,

    /*
     * args:
     * name      default             desc.
     *
     * width     15                  width
     * height    15                  height
     * document  window.document     explicit document reference
     * target    this.document.body  target element to insert checkbox into
     */
    constructor: function(args){
        if(args === null)
            args = {};

        this.width = args.width || 15;
        this.height = args.height || 15;
        this.document = args.document || window.document;
        this.parent = args.target || this.document.body;
        this.canvas = this.document.createElement("canvas");
        this.ctx = this.canvas.getContext('2d');

        this.canvas.width = this.width;
        this.canvas.height = this.height;
        this.canvas.addEventListener("click", this.ev_click(this), false);
        this.parent.appendChild(this.canvas);
        this.draw();
    },

    ev_click: function(self){
        return function(unused){
            self.state = !self.state;
            self.draw();
        }
    },

    draw_rect: function(color, offsetx, offsety){
        this.ctx.fillStyle = color;
        this.ctx.fillRect(offsetx, offsety,
                this.width - offsetx * 2, this.height - offsety * 2);
    },

    draw: function(){
        this.draw_rect("#CCCCCC", 0, 0);
        this.draw_rect("#FFFFFF", 1, 1);
        this.draw_state();
    },

    draw_state: function(){
        if(this.is_checked())
            this.draw_rect("#000000", 2, 2);
    },

    is_checked: function(){
        return this.state == 1;
    }
});

var Checkbox3 = Checkbox.extend({
    ev_click: function(self){
        return function(unused){
            self.state = (self.state + 1) % 3;
            self.draw();
        }
    },

    draw_state: function(){
        if(this.is_checked())
            this.draw_rect("#000000", 2, 2);

        if(this.is_partial())
            this.draw_rect("#000000", 2, (this.height - 2) / 2);
    },

    is_partial: function(){
        return this.state == 2;
    }
});

我稍微修改了上一个代码片段中使用的复选框,使其更通用,从而可以使用具有3个状态的复选框“扩展”它。这是一个演示。正如您所看到的,它已经拥有了比内置复选框更多的功能。

在JavaScript和CSS之间进行选择时需要考虑的问题。

旧的、设计糟糕的代码

演示工作

首先,设置一个画布

var canvas = document.createElement('canvas'),
    ctx = canvas.getContext('2d'),
    checked = 0; // The state of the checkbox
canvas.width = canvas.height = 15; // Set the width and height of the canvas
document.body.appendChild(canvas);
document.body.appendChild(document.createTextNode(' Togglable Option'));

接下来,设计一种让画布自我更新的方法。

(function loop(){
  // Draws a border
  ctx.fillStyle = '#ccc';
  ctx.fillRect(0,0,15,15);
  ctx.fillStyle = '#fff';
  ctx.fillRect(1, 1, 13, 13);
  // Fills in canvas if checked
  if(checked){
    ctx.fillStyle = '#000';
    ctx.fillRect(2, 2, 11, 11);
  }
  setTimeout(loop, 1000/10); // Refresh 10 times per second
})();

最后一部分是使其具有互动性。幸运的是,这很简单:

canvas.onclick = function(){
  checked = !checked;
}

这就是你在IE中可能会遇到的问题,因为JavaScript中奇怪的事件处理模型。


我希望这能帮助到一些人;它绝对符合我的需要。

你可以使用iCheck。它是为jQuery和Zepto定制的复选框和单选按钮,也许它会对您有所帮助。

确保在iccheck .js之前加载jQuery v1.7+

Choose a color scheme, there are 10 different styles available: Black — minimal.css Red — red.css Green — green.css Blue — blue.css Aero — aero.css Grey — grey.css Orange — orange.css Yellow — yellow.css Pink — pink.css Purple — purple.css Copy /skins/minimal/ folder and icheck.js file to your site. Insert before in your HTML (replace your-path and color-scheme): <link href="your-path/minimal/color-scheme.css" rel="stylesheet"> <script src="your-path/icheck.js"></script> Example for a Red color scheme: <link href="your-path/minimal/red.css" rel="stylesheet"> <script src="your-path/icheck.js"></script> Add some checkboxes and radio buttons to your HTML: <input type="checkbox"> <input type="checkbox" checked> <input type="radio" name="iCheck"> <input type="radio" name="iCheck" checked> Add JavaScript to your HTML to launch iCheck plugin: <script> $(document).ready(function(){ $('input').iCheck({ checkboxClass: 'icheckbox_minimal', radioClass: 'iradio_minimal', increaseArea: '20%' // Optional }); }); </script> For different from black color schemes use this code (example for Red): <script> $(document).ready(function(){ $('input').iCheck({ checkboxClass: 'icheckbox_minimal-red', radioClass: 'iradio_minimal-red', increaseArea: '20%' // Optional }); }); </script> Done

这是最简单的方法,你可以选择哪个复选框来提供这种样式。

CSS:

.check-box input {
  display: none;
}

.check-box span:before {
  content: ' ';
  width: 20px;
  height: 20px;
  display: inline-block;
  background: url("unchecked.png");
}

.check-box input:checked + span:before {
  background: url("checked.png");
}

HTML:

<label class="check-box">
  <input type="checkbox">
  <span>Check box Text</span>
</label>

CSS基本用户界面模块第4级(最终)通过一个叫做重音-颜色的新解决方案增加了对这一点的支持,它实际上非常简单,不像这里的其他答案:

输入{ 强调色:rebeccapurple; } <input type="checkbox" />

简单地设置任何CSS颜色(例如命名值,十六进制代码等)你想作为重音颜色的值,它将被应用。

这目前工作在Chrome (v93+), Edge (v93+), Firefox (v92+), Opera (v79+)和Safari (v15.4+)。

注意:Edge, Chrome和Opera(可能还有Safari;我不能测试)目前也不支持通过rgba()的alpha通道值(rgba()的RGB值仍将“工作”;alpha通道将被浏览器忽略)。有关更多信息,请参阅MDN浏览器支持。

下面是一个带有主题支持的示例。这是一种现代的CSS转换方法。绝对不需要JavaScript。

我得到了下面的代码链接在这条评论;在一个相关问题上。

编辑:我添加了单选按钮,maxshuty建议。

const selector = '.grid-container > .grid-row > .grid-col[data-theme="retro"]'; const main = () => { new CheckboxStyler().run(selector); new RadioStyler().run(selector); }; /* * This is only used to add the wrapper class and checkmark span to an existing DOM, * to make this CSS work. */ class AbstractInputStyler { constructor(options) { this.opts = options; } run(parentSelector) { let wrapperClass = this.opts.wrapperClass; let parent = document.querySelector(parentSelector) || document.getElementsByTagName('body')[0]; let labels = parent.querySelectorAll('label'); if (labels.length) labels.forEach(label => { if (label.querySelector(`input[type="${this.opts._inputType}"]`)) { if (!label.classList.contains(wrapperClass)) { label.classList.add(wrapperClass); label.appendChild(this.__createDefaultNode()); } } }); return this; } /* @protected */ __createDefaultNode() { let checkmark = document.createElement('span'); checkmark.className = this.opts._activeClass; return checkmark; } } class CheckboxStyler extends AbstractInputStyler { constructor(options) { super(Object.assign({ _inputType: 'checkbox', _activeClass: 'checkmark' }, CheckboxStyler.defaultOptions, options)); } } CheckboxStyler.defaultOptions = { wrapperClass: 'checkbox-wrapper' }; class RadioStyler extends AbstractInputStyler { constructor(options) { super(Object.assign({ _inputType: 'radio', _activeClass: 'pip' }, RadioStyler.defaultOptions, options)); } } RadioStyler.defaultOptions = { wrapperClass: 'radio-wrapper' }; main(); /* Theming */ :root { --background-color: #FFF; --font-color: #000; --checkbox-default-background: #EEE; --checkbox-hover-background: #CCC; --checkbox-disabled-background: #AAA; --checkbox-selected-background: #1A74BA; --checkbox-selected-disabled-background: #6694B7; --checkbox-checkmark-color: #FFF; --checkbox-checkmark-disabled-color: #DDD; } [data-theme="dark"] { --background-color: #111; --font-color: #EEE; --checkbox-default-background: #222; --checkbox-hover-background: #444; --checkbox-disabled-background: #555; --checkbox-selected-background: #2196F3; --checkbox-selected-disabled-background: #125487; --checkbox-checkmark-color: #EEE; --checkbox-checkmark-disabled-color: #999; } [data-theme="retro"] { --background-color: #FFA; --font-color: #000; --checkbox-default-background: #EEE; --checkbox-hover-background: #FFF; --checkbox-disabled-background: #BBB; --checkbox-selected-background: #EEE; --checkbox-selected-disabled-background: #BBB; --checkbox-checkmark-color: #F44; --checkbox-checkmark-disabled-color: #D00; } /* General styles */ html { width: 100%; height: 100%; } body { /*background: var(--background-color); -- For demo, moved to column. */ /*color: var(--font-color); -- For demo, moved to column. */ background: #777; width: calc(100% - 0.5em); height: calc(100% - 0.5em); padding: 0.25em; } h1 { font-size: 1.33em !important; } h2 { font-size: 1.15em !important; margin-top: 1em; } /* Grid style - using flex */ .grid-container { display: flex; height: 100%; flex-direction: column; flex: 1; } .grid-row { display: flex; flex-direction: row; flex: 1; margin: 0.25em 0; } .grid-col { display: flex; flex-direction: column; height: 100%; padding: 0 1em; flex: 1; margin: 0 0.25em; /* If not demo, remove and uncomment the body color rules */ background: var(--background-color); color: var(--font-color); } .grid-cell { width: 100%; height: 100%; } /* The checkbox wrapper */ .checkbox-wrapper, .radio-wrapper { display: block; position: relative; padding-left: 1.5em; margin-bottom: 0.5em; cursor: pointer; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; } /* Hide the browser's default checkbox and radio buttons */ .checkbox-wrapper input[type="checkbox"] { position: absolute; opacity: 0; cursor: pointer; height: 0; width: 0; } .radio-wrapper input[type="radio"] { position: absolute; opacity: 0; cursor: pointer; height: 0; width: 0; } /* Create a custom checkbox */ .checkbox-wrapper .checkmark { position: absolute; top: 0; left: 0; height: 1em; width: 1em; background-color: var(--checkbox-default-background); transition: all 0.2s ease-in; } .radio-wrapper .pip { position: absolute; top: 0; left: 0; height: 1em; width: 1em; border-radius: 50%; background-color: var(--checkbox-default-background); transition: all 0.2s ease-in; } /* Disabled style */ .checkbox-wrapper input[type="checkbox"]:disabled~.checkmark, .radio-wrapper input[type="radio"]:disabled~.pip { cursor: not-allowed; background-color: var(--checkbox-disabled-background); color: var(--checkbox-checkmark-disabled-color); } .checkbox-wrapper input[type="checkbox"]:disabled~.checkmark:after, .radio-wrapper input[type="radio"]:disabled~.pip:after { color: var(--checkbox-checkmark-disabled-color); } .checkbox-wrapper input[type="checkbox"]:disabled:checked~.checkmark, .radio-wrapper input[type="radio"]:disabled:checked~.pip { background-color: var(--checkbox-selected-disabled-background); } /* On mouse-over, add a grey background color */ .checkbox-wrapper:hover input[type="checkbox"]:not(:disabled):not(:checked)~.checkmark, .radio-wrapper:hover input[type="radio"]:not(:disabled):not(:checked)~.pip { background-color: var(--checkbox-hover-background); } /* When the checkbox is checked, add a blue background */ .checkbox-wrapper input[type="checkbox"]:checked~.checkmark, .radio-wrapper input[type="radio"]:checked~.pip { background-color: var(--checkbox-selected-background); } /* Create the checkmark/indicator (hidden when not checked) */ .checkbox-wrapper .checkmark:after { display: none; width: 100%; position: absolute; text-align: center; content: "\2713"; color: var(--checkbox-checkmark-color); line-height: 1.1em; } .radio-wrapper .pip:after { display: none; width: 100%; position: absolute; text-align: center; content: "\2022"; color: var(--checkbox-checkmark-color); font-size: 1.5em; top: -0.2em; } /* Show the checkmark when checked */ .checkbox-wrapper input[type="checkbox"]:checked~.checkmark:after { display: block; line-height: 1.1em; } .radio-wrapper input[type="radio"]:checked~.pip:after { display: block; line-height: 1.1em; } <link href="https://cdnjs.cloudflare.com/ajax/libs/normalize/8.0.1/normalize.min.css" rel="stylesheet" /> <div class="grid-container"> <div class="grid-row"> <div class="grid-col"> <div class="grid-cell"> <h1>Pure CSS</h1> <h2>Checkbox</h2> <label class="checkbox-wrapper">One <input type="checkbox" checked="checked"> <span class="checkmark"></span> </label> <label class="checkbox-wrapper">Two <input type="checkbox"> <span class="checkmark"></span> </label> <label class="checkbox-wrapper">Three <input type="checkbox" checked disabled> <span class="checkmark"></span> </label> <label class="checkbox-wrapper">Four <input type="checkbox" disabled> <span class="checkmark"></span> </label> <h2>Radio</h2> <label class="radio-wrapper">One <input type="radio" name="group-x"> <span class="pip"></span> </label> <label class="radio-wrapper">Two <input type="radio" name="group-x"> <span class="pip"></span> </label> <label class="radio-wrapper">Three <input type="radio" name="group-x" checked disabled> <span class="pip"></span> </label> <label class="radio-wrapper">Four <input type="radio" name="group-x" disabled> <span class="pip"></span> </label> </div> </div> <div class="grid-col" data-theme="dark"> <div class="grid-cell"> <h1>Pure CSS</h1> <h2>Checkbox</h2> <label class="checkbox-wrapper">One <input type="checkbox" checked="checked"> <span class="checkmark"></span> </label> <label class="checkbox-wrapper">Two <input type="checkbox"> <span class="checkmark"></span> </label> <label class="checkbox-wrapper">Three <input type="checkbox" checked disabled> <span class="checkmark"></span> </label> <label class="checkbox-wrapper">Four <input type="checkbox" disabled> <span class="checkmark"></span> </label> <h2>Radio</h2> <label class="radio-wrapper">One <input type="radio" name="group-y"> <span class="pip"></span> </label> <label class="radio-wrapper">Two <input type="radio" name="group-y"> <span class="pip"></span> </label> <label class="radio-wrapper">Three <input type="radio" name="group-y" checked disabled> <span class="pip"></span> </label> <label class="radio-wrapper">Four <input type="radio" name="group-y" disabled> <span class="pip"></span> </label> </div> </div> <div class="grid-col" data-theme="retro"> <div class="grid-cell"> <h1>JS + CSS</h1> <h2>Checkbox</h2> <label>One <input type="checkbox" checked="checked"></label> <label>Two <input type="checkbox"></label> <label>Three <input type="checkbox" checked disabled></label> <label>Four <input type="checkbox" disabled></label> <h2>Radio</h2> <label>One <input type="radio" name="group-z" checked="checked"></label> <label>Two <input type="radio" name="group-z"></label> <label>Three <input type="radio" name="group-z" checked disabled></label> <label>Four <input type="radio" name="group-z" disabled></label> </div> </div> </div> </div>