用新行(包括空行)将textarea中的文本拆分为javascript数组 [英] Splitting text in textarea by new lines (including empty lines) into javascript array

问题描述

我正在尝试通过换行来拆分textarea数据中的文本.我的当前代码有效，但有一个小要求:生成的数组还必须包含空行.

I'm trying to split the text inside Splitting textarea data by new lines. My current code works, except for a small requirement: The resulting array must include empty lines as well.

<script>
$(function(){
    var lines = [];
    $.each($('#data').val().split(/\n/), function(i, line){
        if(line){
            lines.push(line);
        }
    });
    console.log(lines);
});
</script>


<textarea id="data">
I like to eat icecream. Dogs are fast.

The previous line is composed by spaces only.



The last 3 lines are empty.

One last line.
</textarea>

当前结果是:

[我喜欢吃冰淇淋.狗很快."，"，上一行仅由空格组成."，最后三行是空的."，最后一行."]

["I like to eat icecream. Dogs are fast.", " ", "The previous line is composed by spaces only.", "The last 3 lines are empty.", "One last line."]

应应为:

[我喜欢吃冰淇淋.狗很快."，"，上一行仅由空格组成."，"，"，"，最后3行是空的." ，"，最后一行".]

["I like to eat icecream. Dogs are fast.", " ", "The previous line is composed by spaces only.", "", "", "", "The last 3 lines are empty.", "", "One last line."]

推荐答案

您的.split将包含\ n，但是当line为false时，您可以压入一个空字符串...

Your .split will include \n, but when line is falsey you can just push an empty string...

$(function(){
    var lines = [];
    $.each($('#data').val().split(/\n/), function(i, line){
        if(line){
            lines.push(line);
        } else {
            lines.push("");
        }
    });
    console.log(lines);
});

这是一个有效的示例: JSFiddle

Here is a working example : JSFiddle

输出:

["I like to eat icecream. Dogs are fast.", 
"",  "The previous line is composed by spaces only.",  
"",  "",  "", 
"The last 3 lines are empty.",  
"",  "One last line."]

或者就像上面的注释所暗示的那样(我假设您的示例已经简化，并且您需要在.each循环中做其他事情):

Or simply as comment above suggests (I had assumed that your example had been simplified and you need to do something else in the .each loop):

var lines = $('#data').val().split(/\n/);

JS小提琴

这篇关于用新行(包括空行)将textarea中的文本拆分为javascript数组的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！