javascript - jquery 如何打开input的file选择框?
我先是写了一个
然后我写了一个a标签,在jquery 写的内容是
<code>$('a').on('click', '', function() { $('#fileupdate').click(); });</code>
但是吧,点击后没有任何的反应?
好吧,最终只能用abs定位解决了...效果是实现了,就是有点不开心。
请问大家下,选择文件后,jquery使用什么触发我接下来的操作,比如获取file文件。我使用什么触发?
回复内容:
我先是写了一个
然后我写了一个a标签,在jquery 写的内容是
<code>$('a').on('click', '', function() { $('#fileupdate').click(); });</code>
但是吧,点击后没有任何的反应?
好吧,最终只能用abs定位解决了...效果是实现了,就是有点不开心。
请问大家下,选择文件后,jquery使用什么触发我接下来的操作,比如获取file文件。我使用什么触发?
参考此问题
http://segmentfault.com/q/1010000004322570
js 产生的点击事件不能调出上传文件选择框。
你可以观察一下,js 产生的点击事件 event.isTrusted == false
,而你在浏览器中真实的点击事件event.isTrusted == true
你可以参考在隐藏的文件输入框上调用click()方法
的确用 Javascript 无法直接触发 file 弹框
但是题主想问的是用a标签触发file弹框
这样就可以
<code><script src="http://libs.useso.com/js/jquery/1.11.1/jquery.min.js"></script> <input type="file" name="file" id="fileupdate"> <a id="select">select</a> <script> function select(){ return $('#fileupdate').click(); } $('#select').on('click', '', function() { select(); }); </script></code>
答案是:无解!你无法用任何 Javascript 触发 file 弹框,在任何浏览器都不!
这不是 BUG,这么做是出于安全考虑
不过,你可以通过在a
下面创建一个隐藏的input
模拟该效果
例子
参考:http://stackoverflow.com/questions/210643/in-javascript-can-i-make-a-click-event-fire-programmatically-for-a-file-input
a标签- -。语义化呢,为啥不用label,直接for属性设置那个input file就行了,连js都不用
.. 直接去的input元素 创建click事件就可以了

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