Javascript 如何将数组放在 textarea 中，将每个元素放在自己的行中？
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How do I put an array in a textarea, putting each element on its own line?
提问by DrStrangeLove
How do I output array elements in a textarea, placing each element on its own line?
如何在 textarea 中输出数组元素，将每个元素放在自己的行上？
var your_array = [ "Alice", "Bob", "Eve" ];<textarea id="your_textarea"></textarea>回答by Lekensteyn
An array has a method to glue all elements together, Array.join. Without an argument, it would use a comma (,) as glue. To put every element on a new line, use the newline character (\n).
数组具有将所有元素粘合在一起的方法，Array.join。如果没有参数，它将使用逗号 ( ,) 作为胶水。要将每个元素放在新行上，请使用换行符 ( \n)。
var your_array = [ "Alice", "Bob", "Eve" ];
var textarea = document.getElementById("your_textarea");
textarea.value = your_array.join("\n");<textarea id="your_textarea"></textarea>回答by Andrei
try to use this
尝试使用这个
var a = [1, 2, 3, 4];
var msg = a.join("\n");
var area = document.getElementById("textArea");
area.value= msg;
