input[type='radio'] 스타일 사용자 정의

양식의 경우 input[type="radio"] 스타일은 항상 친숙하지 않으며 브라우저마다 다르게 동작합니다.

차이점을 최대한 보여주고 멋진 모습을 위해 몇 가지 스타일을 먼저 정의합니다.

<span style="color: #000000;">html:
</span><span style="color: #0000ff;"><</span><span style="color: #800000;">form </span><span style="color: #ff0000;">action</span><span style="color: #0000ff;">=""</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="sex"</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="female"</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">label </span><span style="color: #ff0000;">for</span><span style="color: #0000ff;">="female"</span><span style="color: #0000ff;">></span>女<span style="color: #0000ff;"></</span><span style="color: #800000;">label</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="radio"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="sex"</span><span style="color: #ff0000;"> id</span><span style="color: #0000ff;">="female"</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="male"</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">label </span><span style="color: #ff0000;">for</span><span style="color: #0000ff;">="male"</span><span style="color: #0000ff;">></span>男<span style="color: #0000ff;"></</span><span style="color: #800000;">label</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="radio"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="sex"</span><span style="color: #ff0000;"> id</span><span style="color: #0000ff;">="male"</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">form</span><span style="color: #0000ff;">></span>

<span style="color: #800000;">css:
body </span>{<span style="color: #ff0000;"> margin</span>:<span style="color: #0000ff;"> 0</span>; }<span style="color: #800000;">
input </span>{<span style="color: #ff0000;"> padding</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;"> margin</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;"> border</span>:<span style="color: #0000ff;"> 0</span>; }<span style="color: #800000;">
.female, .male </span>{<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> relative</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    line-height</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    margin-left</span>:<span style="color: #0000ff;"> 40px</span>;
}<span style="color: #800000;">
.sex label </span>{<span style="color: #ff0000;">
    display</span>:<span style="color: #0000ff;"> block</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    line-height</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    font-size</span>:<span style="color: #0000ff;"> 20px</span>;<span style="color: #ff0000;">
    cursor</span>:<span style="color: #0000ff;"> pointer</span>;
}<span style="color: #800000;">
.sex input </span>{<span style="color: #ff0000;">
    z-index</span>:<span style="color: #0000ff;"> 3</span>;<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> absolute</span>;<span style="color: #ff0000;">
    top</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;">
    bottom</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;">
    left</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> auto</span>;<span style="color: #ff0000;">
    display</span>:<span style="color: #0000ff;"> block</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 30px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 30px</span>;<span style="color: #ff0000;">
    cursor</span>:<span style="color: #0000ff;"> pointer</span>;
}

그런 다음 각 브라우저에서 관찰해 보면 큰 차이가 있음을 알 수 있습니다.

예:

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가장자리:

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오페라:

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크롬:

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파이어폭스:

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Firefox 브라우저의 경우 너비와 높이가 설정되어 있어도 여전히 input[type="radio"]의 원이 초기 상태만큼 큽니다. 다른 브라우저의 성능도 일관성이 없습니다. 일관된 결과를 얻으려면 호환성 처리를 해야 합니다.

사물:

1. input[type="radio"]를 숨기고 opacity: 0;을 클릭하면 원래 이벤트에 올바르게 응답할 수 있습니다.

2. 원을 맞춤 설정하고 하위 레이어에 배치하여 원래의 유사한 스타일을 시뮬레이션합니다.

3. input[type="radio"]가 선택된 경우 js를 사용하여 아래 맞춤 요소의 원래 배경색을 변경합니다.

코드:

<span style="color: #000000;">html:
</span><span style="color: #0000ff;"><</span><span style="color: #800000;">form </span><span style="color: #ff0000;">action</span><span style="color: #0000ff;">=""</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="sex"</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="female"</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">label </span><span style="color: #ff0000;">for</span><span style="color: #0000ff;">="female"</span><span style="color: #0000ff;">></span>女<span style="color: #0000ff;"></</span><span style="color: #800000;">label</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="radio"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="sex"</span><span style="color: #ff0000;"> id</span><span style="color: #0000ff;">="female"</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">span </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="female-custom"</span><span style="color: #0000ff;">></</span><span style="color: #800000;">span</span><span style="color: #0000ff;">> <!-- 同下面的 span 一样作为自定义的元素 --></span>
        <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="male"</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">label </span><span style="color: #ff0000;">for</span><span style="color: #0000ff;">="male"</span><span style="color: #0000ff;">></span>男<span style="color: #0000ff;"></</span><span style="color: #800000;">label</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="radio"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="sex"</span><span style="color: #ff0000;"> id</span><span style="color: #0000ff;">="male"</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">span </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="male-custom"</span><span style="color: #0000ff;">></</span><span style="color: #800000;">span</span><span style="color: #0000ff;">></span>    
        <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">form</span><span style="color: #0000ff;">></span>

<span style="color: #800000;">css:
body </span>{<span style="color: #ff0000;"> margin</span>:<span style="color: #0000ff;"> 0</span>; }<span style="color: #800000;">
input </span>{<span style="color: #ff0000;"> padding</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;"> margin</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;"> border</span>:<span style="color: #0000ff;"> 0</span>; }<span style="color: #800000;">
.female, .male </span>{<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> relative</span>; /* 设置为相对定位，以便让子元素能绝对定位 */<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    line-height</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    margin-left</span>:<span style="color: #0000ff;"> 40px</span>;
}<span style="color: #800000;">
.sex label </span>{<span style="color: #ff0000;">
    display</span>:<span style="color: #0000ff;"> block</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    line-height</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    font-size</span>:<span style="color: #0000ff;"> 20px</span>;<span style="color: #ff0000;">
    cursor</span>:<span style="color: #0000ff;"> pointer</span>;
}<span style="color: #800000;">
.sex input </span>{<span style="color: #ff0000;">
    z-index</span>:<span style="color: #0000ff;"> 3</span>;<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> absolute</span>;<span style="color: #ff0000;">
    top</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;">
    bottom</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;">
    left</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> auto</span>; /* 这里及以上的定位，可以让该元素竖直居中。(top: 0; bottom: 0;) */<span style="color: #ff0000;">
    opacity</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;">
    display</span>:<span style="color: #0000ff;"> block</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 30px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 30px</span>;<span style="color: #ff0000;">
    cursor</span>:<span style="color: #0000ff;"> pointer</span>;
}<span style="color: #800000;">
.sex span </span>{<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> absolute</span>;<span style="color: #ff0000;">
    top</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;">
    bottom</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;">
    left</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> auto</span>;<span style="color: #ff0000;">
    display</span>:<span style="color: #0000ff;"> block</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 25px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 25px</span>;<span style="color: #ff0000;">
    border</span>:<span style="color: #0000ff;"> 1px solid #000</span>;<span style="color: #ff0000;">
    border-radius</span>:<span style="color: #0000ff;"> 50%</span>;<span style="color: #ff0000;">
    cursor</span>:<span style="color: #0000ff;"> pointer</span>;
}<span style="color: #800000;">        
.sex span.active </span>{<span style="color: #ff0000;">
    background-color</span>:<span style="color: #0000ff;"> #000</span>;            
}

<span style="color: #000000;">js:
$(</span>"#male").click( <span style="color: #0000ff;">function</span><span style="color: #000000;"> () {
    $(</span><span style="color: #0000ff;">this</span>).siblings("span").addClass("active"<span style="color: #000000;">);
    $(</span><span style="color: #0000ff;">this</span>).parents("div").siblings("div").children("span").removeClass("active"<span style="color: #000000;">);
});
$(</span>"#female").click( <span style="color: #0000ff;">function</span><span style="color: #000000;"> () {
    $(</span><span style="color: #0000ff;">this</span>).siblings("span").addClass("active"<span style="color: #000000;">);
    $(</span><span style="color: #0000ff;">this</span>).parents("div").siblings("div").children("span").removeClass("active"<span style="color: #000000;">);
});</span>

이런 식으로 처리하면 브라우저에 표시되는 효과는 모두 동일합니다.

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확장자:

1. 코드에 나타나는 위치 지정의 경우 위치: 절대: 0; 하단: 0; 자식 요소가 달성될 수 있습니다. 자식 요소가 부모 요소를 기준으로 가운데에 표시되도록 합니다(가로 중심 및 세로 가운데 정렬 충족). 수직으로 중앙에 배치해야 한다면 right: 0 및 left: 0; 스타일을 추가할 필요가 없습니다.

2. 때로는 하위 요소의 높이를 결정하는 것이 쉽지 않을 경우 다음과 같이 설정할 수 있습니다. 상위 요소의 위치: 하위 요소의 상대 위치: 절대값; : 10px; margin: auto; 이렇게 하면 하위 요소의 높이가 상위 요소의 높이에서 20px를 뺀 값이 됩니다. 마찬가지로 상단 및 하단도 백분율을 지원하므로 확장성이 뛰어납니다.

최적화 업데이트:

요구사항:

1. 때로는 인라인 라디오 선택 스타일이 필요합니다.

2. 선택한 버튼 내의 작은 원은 바깥쪽 원 전체를 차지할 필요가 없습니다.

사물:

1. 선택한 각 패키지를 왼쪽으로 이동시킵니다.

2. 상위 요소에 원형 외부 테두리를 추가하고 하위 요소의 배경을 상위 요소 크기보다 약간 작게 설정합니다.

코드:

<span style="color: #000000;">html:
</span><span style="color: #0000ff;"><</span><span style="color: #800000;">form </span><span style="color: #ff0000;">action</span><span style="color: #0000ff;">=""</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="fruit"</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="apple"</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">label </span><span style="color: #ff0000;">for</span><span style="color: #0000ff;">="apple"</span><span style="color: #0000ff;">></span>苹果<span style="color: #0000ff;"></</span><span style="color: #800000;">label</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="radio"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="fruit"</span><span style="color: #ff0000;"> id</span><span style="color: #0000ff;">="apple"</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="user-defined"</span><span style="color: #0000ff;">></span>
                <span style="color: #0000ff;"><</span><span style="color: #800000;">span </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="circle"</span><span style="color: #0000ff;">></</span><span style="color: #800000;">span</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="banana"</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">label </span><span style="color: #ff0000;">for</span><span style="color: #0000ff;">="banana"</span><span style="color: #0000ff;">></span>香蕉<span style="color: #0000ff;"></</span><span style="color: #800000;">label</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="radio"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="fruit"</span><span style="color: #ff0000;"> id</span><span style="color: #0000ff;">="banana"</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="user-defined"</span><span style="color: #0000ff;">></span>
                <span style="color: #0000ff;"><</span><span style="color: #800000;">span </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="circle"</span><span style="color: #0000ff;">></</span><span style="color: #800000;">span</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="orange"</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">label </span><span style="color: #ff0000;">for</span><span style="color: #0000ff;">="orange"</span><span style="color: #0000ff;">></span>橘子<span style="color: #0000ff;"></</span><span style="color: #800000;">label</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="radio"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="fruit"</span><span style="color: #ff0000;"> id</span><span style="color: #0000ff;">="orange"</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="user-defined"</span><span style="color: #0000ff;">></span>
                <span style="color: #0000ff;"><</span><span style="color: #800000;">span </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="circle"</span><span style="color: #0000ff;">></</span><span style="color: #800000;">span</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">form</span><span style="color: #0000ff;">></span>

<span style="color: #800000;">css:
* </span>{<span style="color: #ff0000;"> box-sizing</span>:<span style="color: #0000ff;"> border-box</span>; }<span style="color: #800000;">

body </span>{<span style="color: #ff0000;"> padding</span>:<span style="color: #0000ff;"> 50px</span>; }<span style="color: #800000;">

input </span>{<span style="color: #ff0000;"> padding</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;"> margin</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;"> border</span>:<span style="color: #0000ff;"> 0</span>; }<span style="color: #800000;">

.fruit:before </span>{<span style="color: #ff0000;"> content</span>:<span style="color: #0000ff;"> ""</span>;<span style="color: #ff0000;"> display</span>:<span style="color: #0000ff;"> table</span>; }<span style="color: #800000;">

.fruit:after </span>{<span style="color: #ff0000;"> content</span>:<span style="color: #0000ff;"> ""</span>;<span style="color: #ff0000;"> display</span>:<span style="color: #0000ff;"> table</span>;<span style="color: #ff0000;"> clear</span>:<span style="color: #0000ff;"> both</span>; }<span style="color: #800000;">

.fruit > div </span>{<span style="color: #ff0000;"> position</span>:<span style="color: #0000ff;"> relative</span>;<span style="color: #ff0000;"> float</span>:<span style="color: #0000ff;"> left</span>;<span style="color: #ff0000;"> margin-right</span>:<span style="color: #0000ff;"> 50px</span>;<span style="color: #ff0000;"> width</span>:<span style="color: #0000ff;"> 80px</span>;<span style="color: #ff0000;"> height</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;"> line-height</span>:<span style="color: #0000ff;"> 40px</span>; }<span style="color: #800000;">

.fruit > div:last-child </span>{<span style="color: #ff0000;"> margin-right</span>:<span style="color: #0000ff;"> 0</span>; }<span style="color: #800000;">

.fruit label </span>{<span style="color: #ff0000;"> display</span>:<span style="color: #0000ff;"> block</span>;<span style="color: #ff0000;"> width</span>:<span style="color: #0000ff;"> 50px</span>;<span style="color: #ff0000;"> height</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;"> line-height</span>:<span style="color: #0000ff;"> 40px</span>;<span style="color: #ff0000;"> cursor</span>:<span style="color: #0000ff;"> pointer</span>; }<span style="color: #800000;">

.fruit input </span>{<span style="color: #ff0000;"> z-index</span>:<span style="color: #0000ff;"> 3</span>;<span style="color: #ff0000;"> display</span>:<span style="color: #0000ff;"> block</span>;<span style="color: #ff0000;"> opacity</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;"> position</span>:<span style="color: #0000ff;"> absolute</span>;<span style="color: #ff0000;"> top</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;"> bottom</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;"> left</span>:<span style="color: #0000ff;"> 50px</span>;<span style="color: #ff0000;"> margin</span>:<span style="color: #0000ff;"> auto</span>;<span style="color: #ff0000;"> width</span>:<span style="color: #0000ff;"> 30px</span>;<span style="color: #ff0000;"> height</span>:<span style="color: #0000ff;"> 30px</span>;<span style="color: #ff0000;"> cursor</span>:<span style="color: #0000ff;"> pointer</span>; }<span style="color: #800000;">

.fruit .user-defined </span>{<span style="color: #ff0000;"> z-index</span>:<span style="color: #0000ff;"> 2</span>;<span style="color: #ff0000;"> position</span>:<span style="color: #0000ff;"> absolute</span>;<span style="color: #ff0000;"> top</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;"> bottom</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;"> left</span>:<span style="color: #0000ff;"> 50px</span>;<span style="color: #ff0000;"> margin</span>:<span style="color: #0000ff;"> auto</span>;<span style="color: #ff0000;"> width</span>:<span style="color: #0000ff;"> 30px</span>;<span style="color: #ff0000;"> height</span>:<span style="color: #0000ff;"> 30px</span>;<span style="color: #ff0000;"> border</span>:<span style="color: #0000ff;"> 1px solid #000</span>;<span style="color: #ff0000;"> border-radius</span>:<span style="color: #0000ff;"> 50%</span>;<span style="color: #ff0000;"> cursor</span>:<span style="color: #0000ff;"> pointer</span>; }<span style="color: #800000;">

.fruit .user-defined span.circle  </span>{<span style="color: #ff0000;"> display</span>:<span style="color: #0000ff;"> block</span>;<span style="color: #ff0000;"> width</span>:<span style="color: #0000ff;"> 24px</span>;<span style="color: #ff0000;"> height</span>:<span style="color: #0000ff;"> 24px</span>;<span style="color: #ff0000;"> margin-top</span>:<span style="color: #0000ff;"> 2px</span>;<span style="color: #ff0000;"> margin-left</span>:<span style="color: #0000ff;"> 2px</span>;<span style="color: #ff0000;"> background-color</span>:<span style="color: #0000ff;"> transparent</span>;<span style="color: #ff0000;"> border-radius</span>:<span style="color: #0000ff;"> 50%</span>; }<span style="color: #800000;">

.fruit .user-defined span.active  </span>{<span style="color: #ff0000;"> background-color</span>:<span style="color: #0000ff;"> #000</span>; }

<span style="color: #000000;">js:
$(</span>"input").click(<span style="color: #0000ff;">function</span><span style="color: #000000;">() {
    $(</span><span style="color: #0000ff;">this</span>).siblings("div").children("span").addClass("active"<span style="color: #000000;">);
    $(</span><span style="color: #0000ff;">this</span>).parents("div").siblings("div").find("span").removeClass("active"<span style="color: #000000;">);
});</span>

효과는 다음과 같습니다.