[javascript] URL 시작 부분의 문자열 제거

필요한 사항에 따라 몇 가지 선택 사항이 있으며 다음을 수행 할 수 있습니다.

// this will replace the first occurrence of "www." and return "testwww.com"
"www.testwww.com".replace("www.", "");

// this will slice the first four characters and return "testwww.com"
"www.testwww.com".slice(4);

// this will replace the www. only if it is at the beginning
"www.testwww.com".replace(/^(www\.)/,"");

답변

var url = "www.testwww.com";
var PREFIX = "www.";
if (url.indexOf(PREFIX) == 0) {
  // PREFIX is exactly at the beginning
  url = url.slice(PREFIX.length);
}

var newString = originalStrint.substr(4)

var str = "www.test.com",
    rmv = "www.";

str = str.slice( str.indexOf( rmv ) + rmv.length );

str = str.replace( rmv, '' );

String.prototype.removePrefix = function (prefix) {
    const hasPrefix = this.indexOf(prefix) === 0;
    return hasPrefix ? this.substr(prefix.length) : this.toString();
};

const domain = "www.test.com".removePrefix("www."); // test.com

var original = 'www.test.com';
var stripped = original.substring(4);