表單美化

目錄

前面的話

　　由於一些系統原生的表單控制項在各個瀏覽器中顯示效果不一致，且無法設置某些關鍵CSS樣式，為了保證表單在各瀏覽器中的相容性，表單美化就是不得不做的一件事了

單選按鈕

【實現效果】

【實現過程】

body{
    margin: 0;
    font: 16px/20px "宋體";
}
.box{
    width: 500px;
    height: 100px;
    line-height: 100px;
    margin: 0 auto;
    border: 1px solid black;
    text-align: center;
}
.box label{
    position:relative;
    padding-left: 20px;
}
.box input{
    visibility: hidden;
}    
.box i{
    position: absolute;
    top: -2px;
    left: -2px;
    height: 19px;
    width: 19px;
    background: url('http://sandbox.runjs.cn/uploads/rs/26/ddzmgynp/radiobutton.gif') no-repeat -14px -18px;
}
.box label:hover{
    color: red;
}
.box label:hover i{
    background-position: -14px -118px;
}
.box label.selected i{
    background-position: -14px -218px;
}

<div class="box" id="box">
    選擇一項游戲方式：
    <label for="xiu"><i></i>咻一咻</label>
    <input id="xiu" type="radio" value="咻一咻">
    <label for="yao"><i></i>搖一搖</label>
    <input id="yao" type="radio" value="搖一搖">
    <label for="niu"><i></i>扭一扭</label>
    <input id="niu" type="radio" value="扭一扭">
</div>
<script>
var oBox = document.getElementById('box');
var aLabel = oBox.getElementsByTagName('label');
for(var i = 0, leni = aLabel.length; i < leni; i++){
    aLabel[i].onclick = function(){
        for(var j = 0,lenj = aLabel.length; j < lenj; j++){
            aLabel[j].removeAttribute('class');
        }
        this.className = 'selected';
    }
}
</script>

多選按鈕

【實現效果】

【實現過程】

body{
    margin: 0;
    font: 16px/20px "宋體";
}
.box{
    width: 600px;
    height: 100px;
    line-height: 100px;
    margin: 0 auto;
    border: 1px solid black;
    text-align: center;
}
.box label{
    position:relative;
    padding-left: 20px;
}
.box input{
    visibility: hidden;
}    
.box i{
    position: absolute;
    top: -2px;
    left: -2px;
    height: 19px;
    width: 19px;
    background: url('http://sandbox.runjs.cn/uploads/rs/26/ddzmgynp/checkbox.gif') no-repeat -14px -18px;
}
.box label:hover{
    color: red;
}
.box label:hover i{
    background-position: -14px -118px;
}
.box label.selected i{
    background-position: -14px -218px;
}

<div class="box" id="box">
    選擇日常手機交易方式(可多選)：
    <label for="a"><i></i>支付寶</label>
    <input id="a" type="radio" value="支付寶">
    <label for="t"><i></i>微信</label>
    <input id="t" type="radio" value="微信">
    <label for="b"><i></i>百度錢包</label>
    <input id="b" type="radio" value="百度錢包">
</div>
<script>
var oBox = document.getElementById('box');
var aLabel = oBox.getElementsByTagName('label');
for(var i = 0, leni = aLabel.length; i < leni; i++){
    aLabel[i].onclick = function(){
        if(!this.className){
            this.className = 'selected';
        }else{
            this.removeAttribute('class');
        }
    }
}
</script>

下拉列表

【實現效果】

【實現過程】

body{
    margin: 0;
    font: 16px/20px "宋體";
}
ul{
    margin: 0;
    padding: 0;
    list-style: none;
}
.box{
    width: 300px;
    height: 40px;
    margin: 0 auto;
    border: 1px solid black;
}
.box .show{
    background-color: red;
    line-height: 30px;
    padding: 5px;
}
.box .show-area{
    color: white;
    vertical-align: middle;
}
.box .show-select{
    position: relative;
    display: inline-block;
    vertical-align: middle;
    width: 200px;
    height: 28px;
    border: 1px solid #999;
    background-color: white;
    text-indent: 20px;
    cursor: pointer;
}
.box .show-selectAdd{
    color: #999;
}
.box .show-select i{
    position: absolute;
    height: 0;
    width: 0;
    top: 0;
    right: 0;
    margin-top: 12px;
    margin-right: 5px;
    border: 5px solid transparent;
    border-top-color: black;
}
.box .show-selectAdd i{
    border: 5px solid transparent;
    border-bottom-color: black;
    margin-top: 8px;
}
.box .list{
    border: 1px solid #dfdfdf;
    border-top: none;
    display: none;
}
.box .list-in{
    height: 30px;
    line-height: 30px;
    text-indent: 74px;
    border-bottom: 1px solid #dfdfdf;    
    cursor: pointer;
}
.box .list-in:hover{
    color: red;
}

<div class="box" id="box">
    <div class="show">
        <strong class="show-area">地址:</strong>
        <span class="show-select">朝陽區<i></i></span>
    </div>
    <ul class="list">
        <li class="list-in">朝陽區</li>
        <li class="list-in">海澱區</li>
        <li class="list-in">東城區</li>
        <li class="list-in">西城區</li>
        <li class="list-in">丰台區</li>
        <li class="list-in">石景山區</li>
    </ul>
</div>
<script>
var oBox = document.getElementById('box');
var oDiv = oBox.getElementsByTagName('div')[0];
var oShow = oDiv.getElementsByTagName('span')[0];
var oUl = oBox.getElementsByTagName('ul')[0];
var aLi = oUl.getElementsByTagName('li');
//簡單思路
//[1]點擊oDiv時，預設文字為黑色，三角向上，變成文字為#999，三角向下；簡化為增加一個show-selectAdd類名；oUl從隱藏變成顯示
oDiv.onclick = function(e){
    //阻止冒泡
    e = e || event;
    if(e.stopPropagation){
        e.stopPropagation();
    }else{
        e.cancelBubble = true;
    }
    oShow.className = 'show-select show-selectAdd';
    oUl.style.display = 'block';
}
//[2]點擊oUl的li時，oUl從隱藏變成顯示，文字和三角恢復到黑色和向上的預設樣式；並且文字內容變成當前點擊的li的內容
for(var i = 0,len=aLi.length; i < len;i++){
    aLi[i].onclick = function(){
        oShow.innerHTML = this.innerHTML + '<i></i>';
    }
}
//[3]點擊box以外的其他部分時，oUl從隱藏變成顯示，文字和三角恢復到黑色和向上的預設樣式
document.onclick = function(){
    this.getElementsByTagName('span')[0].className = 'show-select';
    oUl.style.display = 'none';    
}
</script>