Html HTML5:如何指定文件输入的宽度?

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时间:2020-08-29 03:50:44  来源:igfitidea点击:

HTML5: How to specify the width of a file input?

csshtml

提问by Brian

The W3C validator says: "Attribute size not allowed on element input at this point."

W3C 验证器说:“此时元素输入不允许属性大小。”

<input type="file" name="foo" size="40" />

What is the correct way to specify the width of a file input in HTML5?

在 HTML5 中指定文件输入宽度的正确方法是什么?

采纳答案by silppuri

In the input field use the style attribute, this allow you to use css.

在输入字段中使用 style 属性,这允许您使用 css。

<input type="file" name="foo" style="width: 40px" />

<input type="file" name="foo" style="width: 40px" />

Or with separate css:

或者使用单独的 css:

input[name="foo"] {
  width: 40px;
}

回答by D.Alexander

In your css file, specify the width as such:

在您的 css 文件中,指定宽度如下:

input[type=file] { width: 300px; border: 2px solid red; }

http://jsfiddle.net/VbTAV/

http://jsfiddle.net/VbTAV/

回答by Epsil0neR

<form  class="upload-form">
    <input class="upload-file" data-max-size="2048" type="file" >
    <input type=submit>
</form>
<script>
$(function(){
    var fileInput = $('.upload-file');
    var maxSize = fileInput.data('max-size');
    $('.upload-form').submit(function(e){
        if(fileInput.get(0).files.length){
            var fileSize = fileInput.get(0).files[0].size; // in bytes
            if(fileSize>maxSize){
                alert('file size is more then' + maxSize + ' bytes');
                return false;
            }else{
                alert('file size is correct- '+fileSize+' bytes');
            }
        }else{
            alert('choose file, please');
            return false;
        }
    });
});
</script>

http://jsfiddle.net/9bhcB/2/

http://jsfiddle.net/9bhcB/2/