Upload file field
##Syntax format: <input type = “file” attribute = “attribute” />
Common attributes
- name: the name of the form element
- value: the value of the form element, this value is actually uploaded file name. The value attribute is a read-only attribute. The content of this value can only come from manually selected uploaded files, and the user cannot specify a path. For security reasons, value is read-only.
Note: Now only the upload file box can be implemented, but the upload function cannot be truly implemented. The upload function is implemented with PHP.
Note:
When you need to upload a file, the form submission method can only be post method,
You must add enctype="multipart/form-data" to the form tag
Example:
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>用户注册</title>
</head>
<body>
<font size="5" color="red">欢迎注册php.cn</font>
<form name="user" method="post" action="" enctype="multipart/form-data" >
用户名：<input type="text" name="username"/>
<br/>
密码：<input type="password" name="userpwd"/>
<br/>
性别：<input type="radio" name="sex" value="男" checked=checked>男
<input type="radio" name="sex" value="女">女
<br/>
爱好：<input type="checkbox" name="hobby" value="运动">运动
<input type="checkbox" name="hobby" value="看电影">看电影
<input type="checkbox" name="hobby" value="编程" checked="checked">编程
<input type="checkbox" name="hobby" value="宅着">宅着
<br/>所在地：
<select name="city">
<option value="北京">北京<option>
<option value="上海">上海<option>
<option value="杭州" selected="selected">杭州<option>
<option value="南京">南京<option>
<option value="合肥">合肥<option>
</select>
<br/>个性介绍：<br/><textarea name=" introduction" cols="30" rows="4"></textarea>
<br/>上传头像：<input type="file" name="upload"/>
<br/><input type="submit" value="提交信息"/>
<input type="reset" value="重填一次"/>
<input type="image" src="http://photocdn.sohu.com/20160107/mp52903269_1452135104978_1_th.png" width="70"/>
<input type="button" onclick="javascript:window.close()" value="关闭窗口"/>
</form>
</body>
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