Javascript 多次重复正则表达式模式
使用JavaScript正则表达式 我正在尝试匹配表单中的文本块:Javascript 多次重复正则表达式模式,javascript,regex,Javascript,Regex,使用JavaScript正则表达式 我正在尝试匹配表单中的文本块: $Label1: Text1 Text1 possibly continues $Label2: Text2 $Label3: Text3 Text3 possibly continues 我想分别捕获标签和文本,这样我将以 ["Label1", "Text1 \n Text1 possibly continues", "Label2", "Text2", "Label3", "Text3 \n
$Label1: Text1
Text1 possibly continues
$Label2: Text2
$Label3: Text3
Text3 possibly continues
我想分别捕获标签和文本,这样我将以
["Label1", "Text1 \n Text1 possibly continues",
"Label2", "Text2",
"Label3", "Text3 \n Text3 possibly continues"]
我有一个regex\$(.*):([^$]*)
,它匹配该模式的一个实例
我想可能是这样的:
(?:\$(.*)([^$]*)*
会给我想要的结果,但到目前为止,我还没有找到一个有效的正则表达式。你只需要标记/g
所以JavaScript正则表达式var re=/\$(.*)([^$]*)/g代码>
您可以使用以下功能:
function extractInfo(str) {
var myRegex = /\$(.*):([^$]*)/gm;
var match = myRegex.exec(str);
while (match != null) {
var key = match[1];
var value = match[2];
console.log(key,":", value);
match = myRegex.exec(str);
}}
以你为例,
var textualInfo = "$Label1: Text1\n Text1 possibly continues \n$Label2: Text2\n$Label3: Text3 \n Text3 possibly continues";
extractInfo(textualInfo);
结果是:
[Log] Label1 : Text1
Text1 possibly continues
[Log] Label2 : Text2
[Log] Label3 : Text3
Text3 possibly continues
有一个很好的答案可以解释这一切。匹配/\$(.*)([^$]*)/g
生成一个只有两个值的数组,['$Label1:Text1\n Text1可能继续','$Label2:Text2$Label3:Text3可能继续']
。这是否意味着我原来的正则表达式是错误的?@Jephron不,你的正则表达式是正确的,只需要循环匹配。
[Log] Label1 : Text1
Text1 possibly continues
[Log] Label2 : Text2
[Log] Label3 : Text3
Text3 possibly continues