尊龙凯时人生就是博

ÔõôÔÚjsÖÐÉùÃ÷Êý×é

javascriptÖÐÉùÃ÷Êý×飺ʹÓ÷½À¨ºÅ ([]) £¬Èç const myarray = [];½¨ÉèÒ»¸ö¿ÕÊý×顣ʹÓà new array() ½á¹¹º¯Êý £¬Èç const myarray = new array();½¨ÉèÒ»¸ö¿ÕÊý×é¡£

ÔõÑùÔÚ JavaScript ÖÐÉùÃ÷Êý×é

JavaScript Êý×éÊÇÒ»ÖÖÓÐÐòÜöÝÍ £¬ÓÃÓÚ´æ´¢ÖÖÖÖÊý¾ÝÀàÐ͵ÄÖµ¡£ËüÃÇʹÓÃÒ»×éÕûÊýË÷Òý¶ÔÆäÔªËؾÙÐлá¼û £¬´Ó 0 ×îÏÈ¡£

ÉùÃ÷Êý×éµÄÒªÁì

ÓÐÁ½ÖÖ³£¼ûµÄÒªÁì¿ÉÒÔÔÚ JavaScript ÖÐÉùÃ÷Êý×飺

1. ʹÓ÷½À¨ºÅ ([])

ÕâÊÇÉùÃ÷Êý×éµÄ×î¼òÆÓÒªÁ죺

const myArray = [];

µÇ¼ºó¸´ÖÆ

Õ⽫½¨ÉèÒ»¸ö¿ÕÊý×é¡£

2. ʹÓà new Array() ½á¹¹º¯Êý

new Array() ½á¹¹º¯ÊýÒ²¿ÉÒÔÓÃÀ´ÉùÃ÷Êý×飺

const myArray = new Array();

µÇ¼ºó¸´ÖÆ

ÕâͬÑù½¨ÉèÒ»¸ö¿ÕÊý×é¡£

ΪÊý×鸳ֵ

ÉùÃ÷Êý×éºó £¬¿ÉÒÔͨ¹ýÒÔÏ·½·¨ÎªÆ丳ֵ£º

myArray[0] = "Öµ 1";
myArray[1] = 2;
myArray[2] = { name: "John" };

µÇ¼ºó¸´ÖÆ

ʹÓÃË÷ÒýÀ´»á¼ûÊý×éÖеÄÔªËØ£º

const value1 = myArray[0]; // "Öµ 1"
const number2 = myArray[1]; // 2
const object3 = myArray[2]; // { name: "John" }

µÇ¼ºó¸´ÖÆ

Êý×éÒªÁì

JavaScript ÌṩÁËÐí¶àÓÃÓÚ²Ù×÷Êý×éµÄÒªÁì £¬ÀýÈ磺

push()£º ½«ÔªËØÌí¼Óµ½Êý×éĩβ

pop()£º ´ÓÊý×éĩβÒƳý×îºóÒ»¸öÔªËØ

unshift()£º ½«ÔªËØÌí¼Óµ½Êý×鿪ͷ

shift()£º ´ÓÊý×鿪ͷÒƳýµÚÒ»¸öÔªËØ

slice()£º ·µ»ØÊý×éµÄÒ»²¿·Ö

splice()£º ´ÓÊý×éÖÐɾ³ý»òÌí¼ÓÔªËØ

ÒÔÉϾÍÊÇÔõôÔÚjsÖÐÉùÃ÷Êý×éµÄÏêϸÄÚÈÝ £¬¸ü¶àÇë¹Ø×¢±¾ÍøÄÚÆäËüÏà¹ØÎÄÕ£¡

ÃâÔð˵Ã÷£ºÒÔÉÏչʾÄÚÈÝȪԴÓÚÏàÖúýÌå¡¢ÆóÒµ»ú¹¹¡¢ÍøÓÑÌṩ»òÍøÂçÍøÂçÕûÀí £¬°æȨÕùÒéÓë±¾Õ¾ÎÞ¹Ø £¬ÎÄÕÂÉæ¼°¿´·¨Óë¿´·¨²»´ú±í尊龙凯时人生就是博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尊龙凯时人生就是博ʵʱÐÞÕý»òɾ³ý¡£

Ïà¹ØÐÂÎÅ

ÁªÏµ尊龙凯时人生就是博

18523999891

¿É΢ÐÅÔÚÏß×Éѯ

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

QR code
sitemap¡¢ÍøÕ¾µØͼ