Question

我有多个字符串，如下所示 -

var str1 = "this is a test that goes on and on"+param1
var str2 = "this is also a test this is also"+param2+" a test this is also a test this is also a tes" 
var str3 = "this is also a test"

我将每个字符串分配给它自己的var，以保持代码可读，并防止字符串值跨越字符串。另外正如我所读到的那样，换行符javascript字符在所有浏览器中都不起作用 - Creating multiline strings in JavaScript

然后我把字符串连接起来 -

var concatStr = str1 + str2 + str3

并返回字符串连接值。

这是将大字符串分解为其部分的可接受方法吗？或者可以改进吗？

Answer 1

无需将每一行分配到不同的变量：

var str1 = "this is a test that goes on and on"+param1 +
     "this is also a test this is also"+param2+
     " a test this is also a test this is also a tes" +
     "this is also a test";

就个人而言，我会做以下事情：

var string = ['hello ', param1,
              'some other very long string',
              'and another.'].join('');

对我来说，输入和阅读更容易。

Answer 2

如果你使用非常长的字符串，那么将它的一部分保存在一个数组中然后加入它们：

ARRAY = ['I', 'am', 'joining', 'the', 'array', '!'];
ARRAY.join(' ');

结果：

"I am joining the array !"

请记住，如果您需要在客户端JavaScript中执行此操作，那么可能您做错了。：）

Answer 3

您可以使用数组。它的join方法是连接字符串的最快方法。

var myArray = [
   "this is a test that goes on and on"+param1,
   "this is also a test this is also"+param2+" a test this is also a test this is also a tes",
   "this is also a test"
];

然后使用：

myArray.join('');

获取完整的字符串。

将大字符串分成几部分

3 个答案: