<a href="javascript:;" class="a-upload">
    <input type="file" name="" id="">點選這裡上傳檔案
</a>

<a href="javascript:;" class="file">選擇檔案
    <input type="file" name="" id="">
</a>

/*a  upload */
.a-upload {
    padding: 4px 10px;
    height: 20px;
    line-height: 20px;
    position: relative;
    cursor: pointer;
    color: #888;
    background: #fafafa;
    border: 1px solid #ddd;
    border-radius: 4px;
    overflow: hidden;
    display: inline-block;
    *display: inline;
    *zoom: 1
}

.a-upload  input {
    position: absolute;
    font-size: 100px;
    right: 0;
    top: 0;
    opacity: 0;
    filter: alpha(opacity=0);
    cursor: pointer
}

.a-upload:hover {
    color: #444;
    background: #eee;
    border-color: #ccc;
    text-decoration: none
}
 

.file {
    position: relative;
    display: inline-block;
    background: #D0EEFF;
    border: 1px solid #99D3F5;
    border-radius: 4px;
    padding: 4px 12px;
    overflow: hidden;
    color: #1E88C7;
    text-decoration: none;
    text-indent: 0;
    line-height: 20px;
}
.file input {
    position: absolute;
    font-size: 100px;
    right: 0;
    top: 0;
    opacity: 0;
}
.file:hover {
    background: #AADFFD;
    border-color: #78C3F3;
    color: #004974;
    text-decoration: none;
}
 

1.

2.

美化後顯示檔名

上面美化，把預設顯示的檔名也給隱藏掉了，那麼如何顯示檔名稱呢？沒關係，我們可以用jquery來獲取檔案的檔名。

我們可以寫個change事件

$(".a-upload").on("change","input[type='file']",function(){
    var filePath=$(this).val();
    if(filePath.indexOf("jpg")!=-1 || filePath.indexOf("png")!=-1){
        $(".fileerrorTip").html("").hide();
        var arr=filePath.split('\\');
        var fileName=arr[arr.length-1];
        $(".showFileName").html(fileName);
    }else{
        $(".showFileName").html("");
        $(".fileerrorTip").html("您未上傳檔案，或者您上傳檔案型別有誤！").show();
        return false 
    }
})