我们可以通过单击 html 的浏览打开按钮来调用 javascript function 吗？
[英]can we call a javascript function by clicking open button of browse of html?
问题描述
Hi guys actually I want to call a function by clicking on open button of browse field of HTML.Is it possible,if yes then provide me information
嗨，伙计们，实际上我想通过单击 HTML 浏览字段的打开按钮来调用 function。是否可能，如果是，请提供信息
2 个解决方案
解决方案1
4 2011-05-24 09:10:04
No. The "Browse" button is not accessible via JS (neither is just the text field next to it).不可以。“浏览”按钮不能通过 JS 访问（也不是它旁边的文本字段）。
File uploads fields are very restricted not only regarding JS access - you cannot even style them properly.文件上传字段不仅在 JS 访问方面受到严格限制——您甚至无法正确设置它们的样式。
解决方案2
0 2011-05-24 09:30:47
Basically there is restriction on browse button, but there is a solution by "onchange" event to call another js function.基本上浏览按钮有限制，但是有一个解决方案是通过“onchange”事件调用另一个js function。 And you can do as you want, eg: gmail file upload attachment, and shows all uploaded files and you can deselect each of them, so these type of js operation can be perform by OnChange method.....而且你可以做你想做的，例如：gmail文件上传附件，并显示所有上传的文件，你可以取消选择每个，所以这些类型的js操作可以通过OnChange方法进行......
and there is a lot of example to do work with browse button.并且有很多示例可以使用浏览按钮。 altering on type=file 改变类型=文件
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