JavaScript text between double quotes
In a single regex:
var m = s.match(/(?:"[^"]*"|^[^"]*$)/)[0].replace(/"/g, "");
TEST:
s = 'Neque "porro quisquam est" qui dolorem ipsum';
m = s.match(/(?:"[^"]*"|^[^"]*$)/)[0].replace(/"/g, "");
//=> porro quisquam est
s = 'Neque porro quisquam est qui dolorem ipsum';
m = s.match(/(?:"[^"]*"|^[^"]*$)/)[0].replace(/"/g, "");
//=> Neque porro quisquam est qui dolorem ipsum
Try:
<script>
let str1 = 'Neque porro quisquam est qui dolorem ipsum';
let str2 = 'Neque "porro quisquam est" qui dolorem ipsum';
let str3 = 'Neque "porro';
let str4 = 'Neque "porro" quisquam "est" qui dolorem ipsum';
function extractFirstText(str){
const matches = str.match(/"(.*?)"/);
return console.log(matches
? matches[1]
: str);
}
function extractAllText(str){
const re = /"(.*?)"/g;
const result = [];
let current;
while (current = re.exec(str)) {
result.push(current.pop());
}
return console.log(result.length > 0
? result
: [str]);
}
// Execution of the functions
extractFirstText(str1);
//Neque porro quisquam est qui dolorem ipsum
extractFirstText(str2);
//porro quisquam est
extractFirstText(str3);
//Neque "porro
extractFirstText(str4);
//porro
extractAllText(str1);
//Array [ "Neque porro quisquam est qui dolorem ipsum" ]
extractAllText(str2);
//Array [ "porro quisquam est" ]
extractAllText(str3);
//Array [ "Neque \"porro" ]
extractAllText(str4);
//Array [ "porro", "est" ]
</script>EDIT reworked to take into account both @AshishMaity comment in a discarded edit about matching more than one substring, and @JosephCho comment about the original breaking in case there is a single quote (str3 in the case above)
try it with this one:
/"((?:\\.|[^"\\])*)"/
Debuggex Demo