function downloadFile(url) {
try {
var elemIF = document.createElement("iframe");
elemIF.src = url;
elemIF.style.display = "none";
document.body.appendChild(elemIF);
} catch (e) {
}
}
使用iframe实现文件下载
function downloadFile(url) {
try {
var elemIF = document.createElement("iframe");
elemIF.src = url;
elemIF.style.display = "none";
document.body.appendChild(elemIF);
} catch (e) {
}
}

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