Javascript±äÁ¿×÷ÓÃÓò
ÇëÏÈ¿´ÏÂÌ⣺
if(true)
{
a = 1;
}
alert(a); //Êä³öɶ£¿
if(true)
{
var a = 1;
}
alert(a); //ÕâÓÖÊä³öʲô£¿
ÔÚfirefox3.5Ï£¬µÚÒ»¸öÊä³ö1;µÚ¶þ¸öÊä³öundefined£¡£¡£¡
ÎªÉ¶ÄØ£¿ºÇºÇ£¬±¾ÈËÔڴ˰àÃÅŪ¸«Ò»Ï£º
Ò»°ãÇé¿öÏÂȱʡvarÉùÃ÷ʱ£¬Ä¬ÈϸñäÁ¿ÎªÈ«¾Ö±äÁ¿¡£Á˽âÕâ¾ä»°£¬ËùÓÐÎÊÌâÒ²¾ÍÓÈжø½âÁË£¡ºÇºÇ£¡
µÚÒ»µÀÌ⣺±äÁ¿aȱʡvarÉùÃ÷£¬¶øÖ±½ÓʹÓ㬹ʶøÄ¬ÈÏΪȫ¾Ö±äÁ¿£¬Êä³ö1
µÚ¶þµÀÌ⣺±äÁ¿a£¬ÔÚif¿éÖÐvarÉùÃ÷£¬Êô¾Ö²¿±äÁ¿£¬Êä³öundefined£¡
Ïà¹ØÎĵµ£º
¡¡´Ó2004ÄêϰëÄ꿪ʼѧϰWeb±à³ÌÖÁ½ñ3ÄêÓÐÓà¡£´ÓHTML£¬asp¿ªÊ¼µ½ÏÖÔÚµÄVS2008һ·ѧ¹ýÀ´£¬ÆäÖÐѧµÄ×î¶àµÄ»¹ÊÇ·þÎñÆ÷¶Ë±à³Ì£¬¶Ô¿Í»§¶Ë±à³ÌµÄѧϰ»¹ÊDz»³Éϵͳ¡£ËäÈ»Ôںܶà¸öϵͳÀïÃæÓ¦Óùý½Å±¾£¬ÓÐЩ»¹Æðµ½Á˱ȽÏÖØÒªµÄ×÷Óᣵ«Ò»Ö±ÊÇÖ»ÖªÆäÈ»²»ÖªÆäËùÒÔÈ»£¬ÓõÄÊÇСÐÄÒíÒí¡£ÏÖÔڽű¾±à³Ì´ÓÒÔǰµÄ"µñ³æÐ¡¼¼"±ä³ÉÁËÒ»¸öWeb¿ª ......
1. ¶¨ÒåÒ»¸öÓÃÓÚÊä³öJavaScript´úÂë µÄServletÀà¡£
package com.mycompany.response.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServle ......
C#´úÂëÓëjavaScriptº¯ÊýµÄÏ໥µ÷ÓÃ
ÎÊ£º
1.ÈçºÎÔÚJavaScript·ÃÎÊC#º¯Êý?
2.ÈçºÎÔÚJavaScript·ÃÎÊC#±äÁ¿?
3.ÈçºÎÔÚC#ÖзÃÎÊJavaScriptµÄÒÑÓбäÁ¿?
4.ÈçºÎÔÚC#ÖзÃÎÊJavaScriptº¯Êý?
ÎÊÌâ1´ð°¸ÈçÏ£º
javaScriptº¯ÊýÖÐÖ´ÐÐC#´úÂëÖеĺ¯Êý£º
·½·¨Ò»£º1¡¢Ê×ÏȽ¨Á¢Ò»¸ö°´Å¥£¬ÔÚºǫ́½«µ÷Óûò´¦ÀíµÄÄÚÈÝдÈëbutton_clickÖÐ ......
ÀàÊÇʲô£¿
Ðí¶à¸Õ½Ó´¥±à³ÌµÄÅóÓѶ¼¿ÉÄÜÀí½â²»ÁËÀ࣬ÆäʵÀàÊǶÔÎÒÃÇÕâ¸öÏÖʵÊÀ½çµÄÄ£Ä⣬°ÑËü˵³É“Àà±ð”»òÕß“ÀàÐÍ”¿ÉÄÜ»á¸üÈÝÒ×Àí½âһЩ¡£±ÈÈç“ÈË”ÕâÖÖ¶¯
Îï¾ÍÊÇÒ»¸öÀ࣬¶ø¾ßÌåijһ¸öÈ˾ÍÊÇ“ÈË”Õâ¸öÀàµÄÒ»¸öʵÀý
£¬
“È ......
µÚ¶þÕ Data Access Êý¾Ý·ÃÎÊ
One of the classic computer science problems is determining where data should be stored for optimal reading and writing. Where data is stored is related to how quickly it can be retrieved during code execution. This problem in JavaScri ......