JavaScript 多行字符串
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JavaScript Multiline String
提问by luca
The question is:
问题是：
What is the JavaScript method to store a multiline string into a variable like you can in PHP?
像在 PHP 中一样将多行字符串存储到变量中的 JavaScript 方法是什么？
回答by Martijn
If by 'multiline string' you mean a string containing linebreaks, those can be written by escaping them using \n(for newline):
如果“多行字符串”是指包含换行符的字符串，则可以通过使用\n（换行符）将它们转义来编写：
var multilineString = 'Line 1\nLine 2';
alert(multilineString);
// Line 1
// Line 2
If you mean, how can a string be written across multiple lines of code, then you can continue the string by putting a \backslash at the end of the line:
如果您的意思是，如何跨多行代码编写字符串，那么您可以通过\在行尾放置反斜杠来继续该字符串：
var multilineString = 'Line \
1\nLine 2';
alert(multilineString);
// Line 1
// Line 2
回答by Endless
var es6string = `<div>
This is a string.
</div>`;
console.log(es6string);
回答by sebastien
Based on previous answers and different use cases, here is a small example:
根据之前的答案和不同的用例，这里有一个小例子：
https://gist.github.com/lavoiesl/5880516Don't forget to use /*! to avoid the comment being removed in minification
https://gist.github.com/lavoiesl/5880516不要忘记使用 /*! 避免评论在缩小时被删除
function extractFuncCommentString(func) {
var matches = func.toString().match(/function\s*\(\)\s*\{\s*\/\*\!?\s*([\s\S]+?)\s*\*\/\s*\}/);
if (!matches) return false;
return matches[1];
}
var myString = extractFuncCommentString(function(){/*!
<p>
foo bar
</p>
*/});
回答by Bj?rn
Only (?) way to have multiline strings in Javascript:
在 Javascript 中使用多行字符串的唯一 (?) 方式：
var multiline_string = 'line 1\
line 2\
line 3';
回答by Rafael Vega
var myString = [
'One line',
'Another line'
].join('\n');
回答by Muhammad Tahir
This works:
这有效：
var htmlString = "<div>This is a string.</div>";
This fails:
这失败了：
var htmlSTring = "<div>
This is a string.
</div>";
Sometimes this is desirable for readability.
有时这对于可读性是可取的。
Add backslashes to get it to work:
添加反斜杠以使其工作：
var htmlSTring = "<div>\
This is a string.\
</div>";
or this way
或者这样
var htmlSTring = 'This is\n' +
'a multiline\n' +
'string';
