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Java´úÂë
function add(number)
{
alert("hello");
}
function add(number)
{
alert("hello");
}
µÈ¼ÛÓÚ
Java´úÂë
var add = new Function("number","alert('hello');");
var add = new Function("number","alert('hello');");
ÓÉÓÚjsÀïÿһ¸öº¯ÊýÀï¶¼Òþº¬Ò»¸ö¶ÔÏó½Ðarguments,¸ÃargumentsÊÇÒ»¸öÊý×飬ͨ¹ýarguments¿ÉÒÔ»ñµÃµ½Êµ¼Ê´«µÝ²ÎÊýµÄ¸öÊý(arguments.length)¼°Êµ¼Ê´«µÝ²ÎÊýµÄÖµ(arguments[0],arguments[1]...)
ËùÒÔ¿ÉÒÔͨ¹ýarguments¶ÔÏóÀ´Ä£ÄâÖØÔØ£¬ÈçÏ£º
Java´úÂë
function add()
{
if(arguments.length == 1)
{
alert(arguments[0] + 10);
}
if(arguments.length == 2)
{
alert(arguments[0] + arguments[1] + 10);
}
}
}
add(5);
add(5,1);
function add()
{
if(arguments.length == 1)
{
alert(arguments[0] + 10);
}
if(arguments.length == 2)
{
alert(arguments[0] + arguments[1] + 10);
}
}
}
add(5);
add(5,1);
2.ÿ¸öº¯ÊýµÄÃû×Ö¶¼ÓÐÒ»¸öÊôÐÔ½Ðlength,“ÊôÐÔÃû.length ”»ñµÃ¸Ãº¯ÊýÄܽÓÊܲÎÊýµÄ¸öÊý¡£
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Java´úÂë
function a1()
{
}
function a2(number)
{
}
 
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<script language="javascript">
function isChinese1(str){
var badChar ="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
badChar += "abcdefghijklmnopqrstuvwxyz";
badChar += "0123456789";
badChar += " "+"¡¡";//°ë½ÇÓëÈ«½Ç¿Õ¸ñ
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* JavaScript¶ÔÏó¾ÍÊÇÒ»×éÊôÐÔ£¨·½·¨£©µÄ¼¯ºÏ
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* ÔòÒ»¶¨µÃÓ÷½À¨ºÅ“ [] ”ÒýÓÃËü
*
*/
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var a = [1,2,3,4,5];
var b = a.shift(); //a£º[2,3,4,5] b£º1
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var a = [1,2,3,4,5];
var b = a.unshift(-2,-1); //a£º[-2,-1,1,2,3,4,5] b£º7
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<script language="javascript">
var strM = "javascript is a good script language";
//ÔÚ´ËÎÒÏ뽫×ÖĸaÌæ»»³É×ÖĸA
alert(strM.replace("a","A"));
</script>
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