javascript 保存文件到本地实现方法

2种形式都可以
第一种：

复制代码 代码如下:

<script>
function SaveAs5(imgURL)
{
var oPop = window.open(imgURL,"","width=1, height=1, top=5000, left=5000");
for(; oPop.document.readyState != "complete"; )
{
if (oPop.document.readyState == "complete")break;
}
oPop.document.execCommand("SaveAs");
oPop.close();
}
</script>
<img src="https://www.jb51.net/t_screenshot_17616.jpg">

复制代码 代码如下:

<script>
function SaveAs5(imgURL)
{
var oPop = window.open(imgURL,"","width=1, height=1, top=5000, left=5000");
for(; oPop.document.readyState != "complete"; )
{
if (oPop.document.readyState == "complete")break;
}
oPop.document.execCommand("SaveAs");
oPop.close();
}
</script>
<img src="https://www.jb51.net/t_screenshot_17616.jpg">
<a href="#"> 点击这里下载图片 </a>

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