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var o = ['Äã', 'da', 'Äã', 123, 'fm', 'fm', 'da', 123, 'fm', 123];
var n = [];
var s = -1;
var t = null;
o.sort();
for(var i = 0; i < o.length; i++)
{
if(o[i] != t)
{
s += 1;
n[s] = [];
}
n[s][n[s].length] = t = o[i];
}
for(var i = 0; i < n.length; i++)
{
alert(n[i]);
}
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var original=28.453
1) //round "original" to two decimals
var result=Math.round(original*100)/100; //returns 28.45
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//ÉèÖÃÈ«¾Ö±äÁ¿foo
var foo = "test";
if(true){
var foo = "new foo";
}
//´ËʱfooΪ"new test"
alert(foo == "new foo");
function test(){
var foo = "old test";
}
//µ÷ÓÃʱ£¬fooÖ»ÔÚº¯Êý×÷ÓÃÓòÄÚÆð×÷ÓÃ
test();
//foo»¹ÊǵÈÓÚ"new test"
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