英文:
How can I remove line breaks from lines that only start with a specific character in JavaScript?
问题
我尝试移除一个字符串中以特定字符开头的换行符，但找不到解决方案。在我的情况下，我尝试移除所有以引号开始的换行符。以下是一个示例：
输入：
`
Test
"How" +
"Can" +
"I" +
Do This?
`;
期望的结果：
`
Test "How" + "Can" + "I"
Do This?
`;
我只能找到一种方法来移除所有的换行符，但仍然无法找到只在满足条件时移除它们的解决方案。
英文:
I am trying to remove line breaks from a string that only begin with a specific character and am having trouble finding a solution. In my scenario I'm am trying to remove all line breaks where the line starts with a quotation mark. Heres an example:
Input:
`
Test
"How" +
"Can" +
"I" +
Do This?
`;
Desired Result:
`
Test "How" + "Can" + "I"
Do This?
`;
I've only been able to find a way to remove all line breaks. Still unable to find a solution to only remove them if a conditional is met.
答案1
得分: 3
以下是翻译好的部分：
你可以直接匹配引号，甚至不需要正则表达式：
let s = `
Test
"How" +
"Can" +
"I" +
Do This?
`;
s = s.replaceAll('\n"', ' "');
console.log(s);
在你的问题中，你还删除了每个新行字符前的 +。如果这是有意的，并且所有这样的 + 都应该被删除，那么可以这样做：
let s = `
Test
"How" +
"Can" +
"I" +
Do This?
`;
s = s.replaceAll('\n"', ' "').replaceAll(" +\n", "\n");
console.log(s);
英文:
You can just match the quote as well -- there's even no need for a regex:
<!-- begin snippet: js hide: false console: true babel: false -->
<!-- language: lang-js -->
let s = `
Test
"How" +
"Can" +
"I" +
Do This?
`;
s = s.replaceAll('\n"', ' "');
console.log(s);
<!-- end snippet -->
In your question you have also removed + before a new line character. If that was intended, and all such + should be removed, then:
<!-- begin snippet: js hide: false console: true babel: false -->
<!-- language: lang-js -->
let s = `
Test
"How" +
"Can" +
"I" +
Do This?
`;
s = s.replaceAll('\n"', ' "').replaceAll(" +\n", "\n");
console.log(s);
<!-- end snippet -->
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