×ðÁú¿­Ê±

jsÔõôɾ³ýÊý×éÖеÄij¸öÔªËØ

javascript ɾ³ýÊý×éÔªËصÄÒªÁìÓУº1. splice() ɾ³ýÖ¸¶¨Ë÷ÒýµÄÔªËز¢·µ»Øɾ³ýµÄÔªËØ £»2. pop() ɾ³ý²¢·µ»Ø×îºóÒ»¸öÔªËØ £»3. shift() ɾ³ý²¢·µ»ØµÚÒ»¸öÔªËØ £»4. filter() ͨ¹ý»Øµ÷º¯Êýɸѡ²»Öª×ãÌõ¼þµÄÔªËز¢·µ»ØÐÂÊý×é¡£

ÔõÑùÓà JavaScript ɾ³ýÊý×éÖеÄij¸öÔªËØ

JavaScript ÌṩÁ˶àÖÖÒªÁìÀ´É¾³ýÊý×éÖеÄij¸öÔªËØ¡£ÒÔÏÂÊÇ×î³£ÓõÄÒªÁ죺

1. splice() ÒªÁì

splice() ÒªÁì¿ÉÒÔÒ»´ÎÐÔɾ³ýÊý×éÖÐÒ»¸ö»ò¶à¸öÔªËØ £¬²¢·µ»ØÒ»¸ö°üÀ¨ÒÑɾ³ýÔªËصÄÐÂÊý×é¡£Óï·¨ÈçÏ£º

array.splice(start, deleteCount)

µÇ¼ºó¸´ÖÆ

ÆäÖУº

start£ºÒª×îÏÈɾ³ýÔªËصÄË÷Òý¡£

deleteCount£ºÒªÉ¾³ýµÄÔªËØÊýÄ¿¡£

ÀýÈç £¬É¾³ýÊý×é [1, 2, 3, 4, 5] ÖÐË÷ÒýΪ 2 µÄÔªËØ£º

const arr = [1, 2, 3, 4, 5];
arr.splice(2, 1); // ɾ³ýË÷ÒýΪ 2 µÄÔªËØ
console.log(arr); // [1, 2, 4, 5]

µÇ¼ºó¸´ÖÆ

2. pop() ÒªÁì

pop() ÒªÁì´ÓÊý×éµÄĩβɾ³ý×îºóÒ»¸öÔªËØ £¬²¢·µ»Ø¸ÃÔªËØ¡£Óï·¨ÈçÏ£º

array.pop()

µÇ¼ºó¸´ÖÆ

ÀýÈç £¬É¾³ýÊý×é [1, 2, 3] ÖеÄ×îºóÒ»¸öÔªËØ£º

const arr = [1, 2, 3];
const removedElement = arr.pop(); // ɾ³ý²¢·µ»ØÊý×éµÄ×îºóÒ»¸öÔªËØ
console.log(arr); // [1, 2]
console.log(removedElement); // 3

µÇ¼ºó¸´ÖÆ

3. shift() ÒªÁì

shift() ÒªÁì´ÓÊý×éµÄ¿ªÍ·É¾³ýµÚÒ»¸öÔªËØ £¬²¢·µ»Ø¸ÃÔªËØ¡£Óï·¨ÈçÏ£º

array.shift()

µÇ¼ºó¸´ÖÆ

ÀýÈç £¬É¾³ýÊý×é [1, 2, 3] ÖеĵÚÒ»¸öÔªËØ£º

const arr = [1, 2, 3];
const removedElement = arr.shift(); // ɾ³ý²¢·µ»ØÊý×éµÄµÚÒ»¸öÔªËØ
console.log(arr); // [2, 3]
console.log(removedElement); // 1

µÇ¼ºó¸´ÖÆ

4. filter() ÒªÁì

filter() ÒªÁ콨ÉèÒ»¸ö°üÀ¨Öª×ã¸ø¶¨Ìõ¼þµÄÐÂÊý×é £¬ÆäÖв»°üÀ¨²»Öª×ãÌõ¼þµÄÔªËØ¡£Óï·¨ÈçÏ£º

array.filter(callbackFunction)

µÇ¼ºó¸´ÖÆ

ÆäÖУº

callbackFunction£ºÒ»¸ö²âÊÔÿ¸öÔªËØÊÇ·ñÖª×ãÌõ¼þµÄº¯Êý¡£

ÀýÈç £¬É¾³ýÊý×é [1, 2, 3, 4] ÖÐËùÓÐżÊý£º

const arr = [1, 2, 3, 4];
const evenNumbers = arr.filter(num => num % 2 === 0);
console.log(evenNumbers); // [2, 4]

µÇ¼ºó¸´ÖÆ

ÒÔÉϾÍÊÇjsÔõôɾ³ýÊý×éÖеÄij¸öÔªËصÄÏêϸÄÚÈÝ £¬¸ü¶àÇë¹Ø×¢±¾ÍøÄÚÆäËüÏà¹ØÎÄÕ£¡

ÃâÔð˵Ã÷£ºÒÔÉÏչʾÄÚÈÝȪԴÓÚÏàÖúýÌå¡¢ÆóÒµ»ú¹¹¡¢ÍøÓÑÌṩ»òÍøÂçÍøÂçÕûÀí £¬°æȨÕùÒéÓë±¾Õ¾ÎÞ¹Ø £¬ÎÄÕÂÉæ¼°¿´·¨Óë¿´·¨²»´ú±í×ðÁú¿­Ê±ÂËÓÍ»úÍø¹Ù·½Ì¬¶È £¬Çë¶ÁÕß½ö×ö²Î¿¼¡£±¾ÎĽӴýתÔØ £¬×ªÔØÇë˵Ã÷À´ÓÉ¡£ÈôÄúÒÔΪ±¾ÎÄÇÖÕ¼ÁËÄúµÄ°æȨÐÅÏ¢ £¬»òÄú·¢Ã÷¸ÃÄÚÈÝÓÐÈκÎÉæ¼°ÓÐÎ¥¹«µÂ¡¢Ã°·¸Ö´·¨µÈÎ¥·¨ÐÅÏ¢ £¬ÇëÄúÁ¬Ã¦ÁªÏµ×ðÁú¿­Ê±ÊµÊ±ÐÞÕý»òɾ³ý¡£

Ïà¹ØÐÂÎÅ

ÁªÏµ×ðÁú¿­Ê±

18523999891

¿É΢ÐÅÔÚÏß×Éѯ

ÊÂÇéʱ¼ä£ºÖÜÒ»ÖÁÖÜÎå £¬9:30-18:30 £¬½ÚãåÈÕÐÝÏ¢

QR code
¡¾ÍøÕ¾µØͼ¡¿¡¾sitemap¡¿