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shift£ºÉ¾³ýÔ­Êý×éµÚÒ»Ï²¢·µ»Øɾ³ýÔªËصÄÖµ£»Èç¹ûÊý×éΪ¿ÕÔò·µ»Øundefined
var a = [1,2,3,4,5];
var b = a.shift(); //a£º[2,3,4,5]  b£º1
unshift£º½«²ÎÊýÌí¼Óµ½Ô­Êý×鿪ͷ£¬²¢·µ»ØÊý×éµÄ³¤¶È
var a = [1,2,3,4,5];
var b = a.unshift(-2,-1); //a£º[-2,-1,1,2,3,4,5]  b£º7
×¢£ºÔÚIE6.0ϲâÊÔ·µ»ØÖµ×ÜΪundefined£¬FF2.0ϲâÊÔ·µ»ØֵΪ7£¬ËùÒÔÕâ¸ö·½·¨µÄ·µ»ØÖµ²»¿É¿¿£¬ÐèÒªÓ÷µ»Øֵʱ¿ÉÓÃsplice´úÌæ±¾·½·¨À´Ê¹Óá£
pop£ºÉ¾³ýÔ­Êý×é×îºóÒ»Ï²¢·µ»Øɾ³ýÔªËصÄÖµ£»Èç¹ûÊý×éΪ¿ÕÔò·µ»Øundefined
var a = [1,2,3,4,5];
var b = a.pop(); //a£º[1,2,3,4]  b£º5
push£º½«²ÎÊýÌí¼Óµ½Ô­Êý×éĩ⣬²¢·µ»ØÊý×éµÄ³¤¶È
var a = [1,2,3,4,5];
var b = a.push(6,7); //a£º[1,2,3,4,5,6,7]  b£º7
concat£º·µ»ØÒ»¸öÐÂÊý×飬Êǽ«²ÎÊýÌí¼Óµ½Ô­Êý×éÖй¹³ÉµÄ
var a = [1,2,3,4,5];
var b = a.concat(6,7); //a£º[1,2,3,4,5]  b£º[1,2,3,4,5,6,7]
splice(start,deleteCount,val1,val2,...)£º´ÓstartλÖÿªÊ¼É¾³ýdeleteCountÏ²¢´Ó¸ÃλÖÃÆð²åÈëval1,val2,...
var a = [1,2,3,4,5];
var b = a.splice(2,2,7,8,9); //a£º[1,2,7,8,9,5]  b£º[3,4]
var b = a.splice(0,1); //ͬshift
a.splice(0,0,-2,-1); var b = a.length; //ͬunshift
var b = a.splice(a.length-1,1); //ͬpop
a.splice(a.length,0,6,7); var b = a.length; //ͬpush
reverse£º½«Êý×é·´Ðò
var a = [1,2,3,4,5];
var b = a.reverse(); //a£º[5,4,3,2,1]  b£º[5,4,3,2,1]
sort(orderfunction)£º°´Ö¸¶¨µÄ²ÎÊý¶ÔÊý×é½øÐÐÅÅÐò
var a = [1,2,3,4,5];
var b = a.sort(); //a£º[1,2,3,4,5]  b£º[1,2,3,4,5]
slice(start,end)£º·µ»Ø´ÓÔ­Êý×éÖÐÖ¸¶¨¿ªÊ¼Ï±굽½áÊøϱêÖ®¼äµÄÏî×é³ÉµÄÐÂÊý×é
var a = [1,2,3,4,5];
var b = a.slice(2,5); //a£º[1,2,3,4,5]  b£º[3,4,5]
join(separator)£º½«Êý×éµÄÔªËØ×éÆðÒ»¸ö×Ö·û´®£¬ÒÔseparatorΪ·Ö¸ô·û£¬Ê¡ÂԵĻ°ÔòÓÃĬÈÏÓöººÅΪ·Ö¸ô·û
var a = [1,2,3,4,5];
var b = a.join("|"); //a£º[1,2,3,4,5]  b£º"1|2|3|4|5"