/by ppchen var a = 10, b = 2;  a = a + b;  b = a - b;  a = a - b;

//by Mr.司马  var a = 10000,b=245 a = a^b; b = b^a; a = a ^b;

//by cloudgamer var a = 33,b=44 a=[a,b] b=a[0] a=a[1]

//by Mr.司马 var a = 23,b=454; a = {a:b,b:a}; b = a.b; a = a.a;

a = b + (b = a)*0;//这涉及到运算顺序的问题，从左到右进行运算。。。如果改成a =  (b = a)*0+b就是另外的结果

//另外注意下赋值顺序a=b=21,从左到右进行赋值。、、