在js中，如何替换将\\ n（而不是新行标记）作为字符串添加到textarea中每行的结尾

Question

ok so ill try to be clear.

I have a textarea and it will have multiple lines of text and at the end of each line i want to add \\n but the replace function just adds a new line. I am then going to put the result into a different textarea after the string has been modified.

i have tried a variety of methods but cant seem to get it to work

example of my current stage

var my_text=$("textarea[name=text_area]").val();    
my_text=my_text.replace(/\n/g,'["\n"]\n');
my_text=$("textarea[name=modifiedtext_area]")

i want the textbox content to go from

fgdf
g
sdfg
asdff

to the below in the new textarea

fgdf\n
g\n
sdfg\n
asdff\n

Answer 1

如果要显示实际文本\\n ，则必须转义斜杠\\\\n

my_text=my_text.replace(/\n/g,"\\n\n");