javascript FileReader 转字符串
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时间:2020-10-27 22:05:53 来源:igfitidea点击:
FileReader to String
提问by URL87
Consider the following code
考虑以下代码
function readSingleFile(evt) {
//Retrieve the first (and only!) File from the FileList object
var myFile = evt.target.files[0];
var reader = new FileReader();
reader.readAsText(myFile);
var myString = reader.toString();
alert(myString); // print - "[object FileReader]"
}
I try to get all the file content into String
, for example if the file content is
我尝试将所有文件内容放入String
,例如,如果文件内容是
helloWorld1
helloWorld2
I will get alert
of that's content .
我会明白alert
的。
回答by markasoftware
That's not how you get the result of a FileReader
. Modify your code to this:
这不是您获得 a 的结果的方式FileReader
。将您的代码修改为:
function readSingleFile(evt) {
//Retrieve the first (and only!) File from the FileList object
var myFile = evt.target.files[0];
var reader = new FileReader();
reader.readAsText(myFile);
reader.onload=function(){alert(reader.result)}
}