textarea的值转换为JavaScript数组(以换行分隔) [英] Convert textarea value to javascript array (separated by new lines)
问题描述
我有一个textarea,用户可以写入多达1000个字符。我需要获得$('#textarea的')。VAL(),并创建一个数组,其中每个产品textarea的价值的一条线。这意味着:
I have a textarea where the user can write up to 1000 characters. I need to get the $('#textarea').val() and create an array where each item is a line of the textarea's value. That means:
这是文本区域内一个漂亮的线。
This is a nice line inside the textarea.
这是另一条线路。
(让我们asume这条线是空的 - 它应该被忽略)。
(let's asume this line is empty - it should be ignored).
左上面有人超过2个新行。
Someone left more than 2 new lines above.
应该被转换为JavaScript数组:
Should be converted to a javascript array:
var texts = [];
text[0] = 'This is a nice line inside the textarea.';
text[1] = 'This is another line.';
text[2] = 'Someone left more than 2 new lines above.';
这样,他们可以很容易地内爆获取到的查询字符串(这是由供应商所要求的QS格式):
That way they can be easily imploded for to querystring (this is the qs format required by the provider):
example.com/process.php?q =这是textarea的内一个漂亮的线。,这是另一条线。,左上面有人超过2个新的生产线。]
example.com/process.php?q=["This is a nice line inside the textarea.","This is another line.","Someone left more than 2 new lines above."]
我试用过 phpjs爆炸()并string.split(\\ n);接近但他们并不需要额外的新行(如果有的话)的照顾。任何想法?
I tried both the phpjs explode() and string.split("\n"); approaches but they doesn't take care of the extra new lines (if any). Any ideas?
推荐答案
String.prototype.split()
是甜的。
var lines = $('#mytextarea').val().split(/\n/);
var texts = [];
for (var i=0; i < lines.length; i++) {
// only push this line if it contains a non whitespace character.
if (/\S/.test(lines[i])) {
texts.push($.trim(lines[i]));
}
}
注意 String.prototype.split
不是所有平台都支持,所以jQuery提供 $。斯普利特()
来代替。它简单地修剪围绕一个串的端部的空白
Note that String.prototype.split
is not supported on all platforms, so jQuery provides $.split()
instead. It simply trims whitespace around the ends of a string.
$.trim(" asd \n") // "asd"
看看这里: http://jsfiddle.net/p9krF/1/
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