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concat·½·¨·µ»ØÒ»¸öÐÂÊý×飬Ëü°üº¬arrayµÄdz¸´ÖÆ(shallow copy)²¢½«1¸ö»ò¶à¸ö²ÎÊýitem¸½¼ÓÔÚÆäºó¡£Èç¹û²ÎÊýitemÊÇÒ»¸öÊý×飬ÄÇôËüµÄÿ¸öÔªËØ»á±»·Ö±ðÌí¼Ó¡£´ËÍ⣬Çë²Î¼û±¾ÕºóÃæµÄarray.push(item…)·½·¨¡£
var a=[‘a’,’b’,’c’];
var b=[‘x’,’y’,’z’];
var ca.concat(b,true);
//cÊÇ[‘a’,’b’,’c’, ‘x’,’y’,’z’,true]
array.join(separator)
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var a=['a','b','c'];
a.push('d');
var c=a.join(''); //cÊÇ'abcd'
array.pop()
popºÍpush·½·¨Ê¹Êý×éarrayÏñ¶ÑÕ»(stack)Ò»Ñù¹¤×÷¡£pop·½·¨ÒƳýarrayÖеÄ×îºóÒ»¸öÔªËØ²¢·µ»Ø¸ÃÔªËØ¡£Èç¹û¸ÃarrayÊǿյģ¬Ëü»á·µ»Øundefined¡£
var a=['a','b','c'];
var c=a.pop(); //aÊÇ['a','b'],cÊÇ'c'
array.push(item…)
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var a=['a','b','c'];
var b=['x','y','z'];
var c=a.push(b,true);
array.reverse()
reverse·½·¨·´×ªarrayÖеÄÔªËØµÄ˳Ðò¡£Ëü·µ»Øµ±Ç°µÄarray£º
var a=['a','b','c'];
var b=a.reverse();
//aºÍb¶¼ÊÇ['c','b','a']
array.shift()
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var a=['a','b','c'];
var c=a.shift(); //aÊÇ['b','c']cÊÇ'a'
array.slice(s
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