JavaScript涓殑getElementsByTagName鏂规硶鐢ㄤ簬鑾峰彇鏂囨。涓叿鏈夋寚瀹氭爣绛惧悕绉扮殑鎵€鏈夊厓绱狅紝骞惰繑鍥炰竴涓寘鍚繖浜涘厓绱犵殑HTMLCollection瀵硅薄銆?/p>

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绀轰緥浠ｇ爜锛?/p>

// 鑾峰彇鎵€鏈夌殑娈佃惤鍏冪礌
var paragraphs = document.getElementsByTagName("p");
for (var i = 0; i < paragraphs.length; i++) {
  // 淇敼鍏冪礌鐨勬牱寮?/span>
  paragraphs[i].style.color = "red";
}

// 鑾峰彇鎵€鏈夌殑閾炬帴鍏冪礌
var links = document.getElementsByTagName("a");
for (var i = 0; i < links.length; i++) {
  // 淇敼閾炬帴鐨勫湴鍧€
  links[i].href = "https://www.example.com";
}

鎬讳箣锛実etElementsByTagName鏂规硶鏄疛avaScript涓父鐢ㄧ殑DOM鎿嶄綔鏂规硶锛岀敤浜庨€夋嫨鎸囧畾鏍囩鍚嶇О鐨勫厓绱狅紝骞舵彁渚涗簡鏂逛究鐨勬搷浣滈€変腑鍏冪礌鐨勬柟娉曘€?/p>