jQuery 如何将数据从文本文件加载到 javascript 数组？
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how to load data from text file to javascript array?
提问by user1788736
i have an array called items=["apple","mango","cherry"];
我有一个名为的数组 items=["apple","mango","cherry"];
i wonder how i can load the array data from text file instead of declaring it?the text file data is stored like this "apple","mango","cherry",...
我想知道如何从文本文件加载数组数据而不是声明它？文本文件数据的存储方式类似于“apple”、“mango”、“cherry”、...
furthermore, how to add to the end of this this text file an item for example add "orange" after "cherry"?
此外，如何在此文本文件的末尾添加一个项目，例如在“樱桃”之后添加“橙色”？
items=["apple","mango","cherry"];
if (items.indexOf(myVariable2) == -1) {
// not found, so output it
t++;
document.myform3.outputtext3.value +=myVariable2+"\n";
}
回答by iConnor
With jQuery you can do something like this
使用 jQuery 你可以做这样的事情
$.get("textFile.txt", function(data) {
var items = data.split(',');
});
You may need something like this though
你可能需要这样的东西
var items = data.replace(/"/g, '').split(',');
This is a start.
这是一个开始。
If this is a user input file then you may need to upload it before you work with it.
如果这是一个用户输入文件，那么您可能需要在使用它之前上传它。
回答by Shiva
Sorry, but I don't believe it's quite that simple. Browsers restrict access to local drives (and to server drives) for security reasons.
抱歉，但我不相信事情这么简单。出于安全原因，浏览器会限制对本地驱动器（和服务器驱动器）的访问。
But one way to access the text file using jQuery would be
但是使用 jQuery 访问文本文件的一种方法是
jQuery.get('http://localhost/foo.txt', function(data) {
var myvar = data;
});
回答by user1788736
var file = event.target.file;
var reader = new FileReader();
var txt=reader.readAsText(file);
var items=txt.split(",");
