Javascript 换行文本区域

Question

I have a text area that I want to pre-populate with some specific text that includes line breaks. I'm populating the area onLoad but I can't get the line breaks to work correctly. Any advice on how to do that? Thanks.

Answer 1

您需要用换行符替换换行符： \\n

Answer 2

Just use the newline character: \\n .

So, if you want the textarea to look like this:

This is line 1
This is line 2

You would use a string like this:

"This is line 1\nThis is line 2";

See a demo here: http://jsfiddle.net/MzmBd/

Answer 3

As stated multiple times, you need the \\n character.

see here: http://jsfiddle.net/XbALv/

document.getElementById("blah").value = 
"This" + "\n" +
"is some" + "\n" +
"text" + "\n";

Answer 4

i had tried many ways to break a textarea into an array. used this method, it might not be the best.

using .split('\\n') does not remove the break and it will create whitespace or break when insert into database. therefore, i replace it with

textarea content:
12345
6789

---

a = a.replace(/\n|\r\n|\r/g, "<br>");

var stringArray = a.split('<br>');

for (var i = 0; i < stringArray.length; i++) {
var myString = stringArray[i];
myString = myString.replace('<br>', "");

response.write(myString);
}

Answer 5

像这样替换：

str.replace(/[\r\n]+/g, '\\\n') %>';

Answer 6

break a textarea into an array

textarea content: underscore_case first_name Some_Variable calculate_AGE delayed_departure

   const variableCase = function (variable) {
        const variableSplit = variable.split('\n');
        const spaceRemoved = [];

        for (const removeSpace of variableSplit) {
          const RST = removeSpace.trim();
          spaceRemoved.push(RST);
        }

        console.log(spaceRemoved); // output: ["underscore_case", "first_name", "Some_Variable", "calculate_AGE", "delayed_departure"]
      };