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ʹÓà splice() ÒªÁì
splice() ÒªÁì¿ÉÒÔÖ±½Óɾ³ýÊý×éÖеÄÔªËØ£¬²¢·µ»Ø±»É¾³ýµÄÔªËØ¡£Óï·¨ÈçÏ£º
let removedElements = array.splice(start, deleteCount);
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const fruits = ['Æ»¹û', 'Ï㽶', 'Àæ', 'ÆÏÌÑ']; const removedElements = fruits.splice(1, 2); // ´ÓË÷Òý 1 ×îÏÈɾ³ýÁ½¸öÔªËØ console.log(fruits); // ['Æ»¹û', 'ÆÏÌÑ'] console.log(removedElements); // ['Ï㽶', 'Àæ']
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ʹÓà pop() ÒªÁì
pop() ÒªÁìɾ³ý²¢·µ»ØÊý×éµÄ×îºóÒ»¸öÔªËØ¡£Óï·¨£º
let lastElement = array.pop();
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const fruits = ['Æ»¹û', 'Ï㽶', 'Àæ', 'ÆÏÌÑ']; const lastElement = fruits.pop(); // ɾ³ý²¢·µ»Ø×îºóÒ»¸öÔªËØ console.log(fruits); // ['Æ»¹û', 'Ï㽶', 'Àæ'] console.log(lastElement); // 'ÆÏÌÑ'
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ʹÓà shift() ÒªÁì
shift() ÒªÁìɾ³ý²¢·µ»ØÊý×éµÄµÚÒ»¸öÔªËØ¡£Óï·¨£º
let firstElement = array.shift();
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const fruits = ['Æ»¹û', 'Ï㽶', 'Àæ', 'ÆÏÌÑ']; const firstElement = fruits.shift(); // ɾ³ý²¢·µ»ØµÚÒ»¸öÔªËØ console.log(fruits); // ['Ï㽶', 'Àæ', 'ÆÏÌÑ'] console.log(firstElement); // 'Æ»¹û'
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