ES6涓彲浠ヤ娇鐢╥ncludes()鏂规硶鏉ュ垽鏂竴涓暟缁勬槸鍚﹀寘鍚煇涓厓绱犮€傝繖涓柟娉曡繑鍥炰竴涓竷灏斿€硷紝琛ㄧず鏁扮粍鏄惁鍖呭惈鎸囧畾鐨勫厓绱犮€?/p>

璇硶濡備笅锛?/p>

array.includes(searchElement[, fromIndex])

鍙傛暟璇存槑锛?/p>

• searchElement锛氳鎼滅储鐨勫厓绱犮€?/p>

• fromIndex锛堝彲閫夛級锛氬紑濮嬫悳绱㈢殑绱㈠紩锛岄粯璁や负0銆?/p>

绀轰緥浠ｇ爜锛?/p>

const array = [1, 2, 3, 4, 5];
console.log(array.includes(3));  // 杈撳嚭true
console.log(array.includes(6));  // 杈撳嚭false
console.log(array.includes(3, 2));  // 杈撳嚭false锛屼粠绱㈠紩2寮€濮嬫悳绱笉鍖呭惈3

娉ㄦ剰锛歩ncludes()鏂规硶鍦‥S6涓柊澧烇紝濡傛灉闇€瑕佸吋瀹规棫鐗堟湰鐨勬祻瑙堝櫒锛屽彲浠ヤ娇鐢╥ndexOf()鏂规硶鏉ュ垽鏂暟缁勬槸鍚﹀寘鍚煇涓厓绱犮€備緥濡傦細

console.log(array.indexOf(3) !== -1);  // 杈撳嚭true
console.log(array.indexOf(6) !== -1);  // 杈撳嚭false