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js下載文件

時間：2021-07-05 18:46:47 阅读：0 評論：0 收藏：0 [點我收藏+]

標簽：remove 標簽 frame rgba color 操作 rem nload iframe

點擊下載文件，一般分爲兩種，1.接口處理，直接在服務器上下載文件，前端只需要掉一個接口就可以了。2.接口返回一個url，前端根據返回的url，自己處理下載操作。

下载文件可以借助a標簽的download属性

//  1.创建a標簽，触发点击事件
var a = document.createElement(‘a‘);
a.href = url;
a.download = "file";
document.body.appendChild(a)
a.click();
document.body.removeChild(a);
//  2.使用window.open方法
window.open(url)
//  3.使用location.href方法
window.location.href = url

使用上面的方法之後，發現第一次點擊下載的時候，不是直接在本頁面直接下載，總是會刷新本頁面的url，或者新打開一個tab進行下載。（我想要的效果是第一次點擊的時候，也在本頁面進行下載）

鑒于上面方法不能實現我想要的功能，所以我又找到了另一個方法，使用iframe來實現我的功能。

var iframe = document.createElement(‘iframe‘);
iframe.src = url
iframe.style = "display:none";
document.body.appendChild(iframe);
document.body.removeChild(iframe);

標簽：remove 標簽 frame rgba color 操作 rem nload iframe

原文地址：https://www.cnblogs.com/zsj-02-14/p/14966977.html

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