const regex = /((?:[a-zA-Z][0-9a-zA-Z]*)(?:\,\s*[a-zA-Z][0-9a-zA-Z]*){0,2})\s+in\s+([a-zA-Z][0-9a-zA-Z\.]*)/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('((?:[a-zA-Z][0-9a-zA-Z]*)(?:\\,\\s*[a-zA-Z][0-9a-zA-Z]*){0,2})\\s+in\\s+([a-zA-Z][0-9a-zA-Z\\.]*)', 'g')
const str = `//초록색으로 표시되는 부분(A)에는 객체의 속성값, 키값, 인덱스값을 각각 표현할 단어를 지정합니다
//빨간색 부분(B)에는 바인딩 할 객체를 지정합니다. '.'을 통해 내부 객체에 접근할수도 있습니다.
//전체적으로 A in B의 형태를 띄게 됩니다.
val, key, index in sampleObj.inner
val, key in sampleObj.inner
val in sampleObj`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions