下载属性在Firefox中不起作用

Question

我试图让用户使用Javascript和HTML5下载属性(http://caniuse.com/#feat=download)将一些数据下载为CSV(文本)文件.

数据以数组形式生成,然后添加到新的Blob对象中.

它在Chrome和Opera中完美运行,但在Firefox中根本不起作用.

我试图复制的原始示例:http://blog.eliacontini.info/post/79860720828/export-to-csv-using-javascript-the-download-attribute

小提琴:http://jsfiddle.net/8wos7cf8/5/

使用Javascript:

$('#downloadButton').click(function () {
// some data to export
var data = [{
    "title": "Book title 1",
    "author": "Name1 Surname1"
}, {
    "title": "Book title 2",
    "author": "Name2 Surname2"
}, {
    "title": "Book title 3",
    "author": "Name3 Surname3"
}, {
    "title": "Book title 4",
    "author": "Name4 Surname4"
}];

// prepare CSV data
var csvData = new Array();
csvData.push('"Book title","Author"');
data.forEach(function (item, index, array) {
    csvData.push('"' + item.title + '","' + item.author + '"');
});

// download stuff
var fileName = "data.csv";
var buffer = csvData.join("\n");
var blob = new Blob([buffer], {
    "type": "text/csv;charset=utf8;"
});
var link = document.createElement("a");

if (link.download !== undefined) { // feature detection
    // Browsers that support HTML5 download attribute
    link.setAttribute("href", window.URL.createObjectURL(blob));
    link.setAttribute("download", fileName);
    link.click();
} else {
    alert('CSV export only works in Chrome, Firefox, and Opera.');
}
});

HTML:

<div class="toggle-button" id="downloadButton"><span>Export to CSV</span></div>

当我添加警报时:

alert(window.URL.createObjectURL(blob));

我在Firefox中得到了这个结果:

...这导致Chrome/Opera:

因此出于某种原因,它似乎省略了Firefox中的URL路径.

Answer 1

您可以尝试在触发点击之前将元素添加到DOM:

document.body.appendChild(link);
link.click();
document.body.removeChild(link);

这在Firefox 34中适用于我

jsfiddle:http://jsfiddle.net/8wos7cf8/7/