Firefox 52：JavaScript parseFloat无法与UTF-16字符串一起使用

Question

I have been trying to read the contents of a UTF-16 file in Firefox v52 with this:

$.ajax({
    type: "GET",
    url: "downloads/dg_mare_piwik_social.csv",
    dataType: "text",
    success: function(data) {

        // Split the lines

        var lines = data.split('\n');
        for (var i = 1, len = lines.length; i < len; ++i) {
            var items = lines[i].split(',');
            console.log(items[0], Number.parseFloat(items[1]));
        }
});

The problem is that in the console I get NaN from the parseFloat(items[1]) . This happens only in Firefox, all other browsers get the number with that.

How can I get it to work? How can I get the number from a UTF-16 string?

Answer 1

Kudos to TJ Crowder that helped me to identify the source of the problem. Changing it to this has solved my problem:

$.ajax({
    type: "GET",
    url: "downloads/dg_mare_piwik_social.csv",
    dataType: "text",
    beforeSend: function (data) { data.overrideMimeType('text/plain; charset=UTF-16'); },
    success: function(data) {

        // Split the lines

        var lines = data.split('\n');
        for (var i = 1, len = lines.length; i < len; ++i) {
            var items = lines[i].split(',');
            console.log(items[0], Number.parseFloat(items[1]));
        }
});

Adding the overrideMimeType at beforesend.