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Code
var arrA = new Array(1,23,43,64,1,23,5,8,3,5,9);
var arrB = getNewArray(arrA); // ¹ýÂ˺¯Êý
È»ºó¿ªÊ¼±àдº¯ÊýgetNewArray()
Code
function getNewArray(receiveArray)
{
var arrResult = new Array(); //¶¨ÒåÒ»¸ö·µ»Ø½á¹ûÊý×é.
for (var i=0; i<receiveArray.length; i++)
{
if (/*ÔÚÕâÀï×öiÔªËØÓëËùÓÐÅжÏÏàͬÓë·ñ, µ÷Óú¯Êýcheck(arrResult, receiveArray[i]);*/)
{
arrResult.push(receiveArray[i]); // Ìí¼Ó¸ÃÔªËØµ½ÐÂÊý×é¡£Èç¹ûifÄÚÅжÏΪfalse£¨¼´ÒÑÌí¼Ó¹ý£©£¬Ôò²»Ìí¼Ó¡£
}
}
return arrResult;
}
È»ºó±àдÅжϺ¯Êýcheck()
Code
function check(receiveArray, checkItem)
{
var index = -1; // º¯Êý·µ»ØÖµÓÃÓÚ²¼¶ûÅжÏ
for (var i=0; i<receiveArray.length; i++)
{
if (receiveArray[i]==checkItem)
{
index = i;
break;
}
}
return index;
}
ÔòÔÚº¯ÊýgetNewArray()ÖеÄifÓ¦¸Ãд³É:
Code
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Javascript Closures
Introduction
The Resolution of Property Names on Objects
Assignment of Values
Reading of Values
Identifier Resolution, Execution Contexts and Scope Chains
The Execution Context
Scope chains and [[scope]]
Identifier Resolution
Closures
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