JavaScriptÐÔÄÜÓÅ»¯Ö®Ñ»·²Ù×÷
JavaScriptÖÐÓÐËÄÖÖ²»Í¬ÀàÐ͵ÄÑ»·£¬forÑ»·¡¢do-whileÑ»·ºÍwhileÑ»·¡££¨µÚËÄÖÖÀàÐÍΪfor-inÑ»·£¬ÓÃÓÚµü´ú¶ÔÏóµÄÊôÐÔ£¬±¾ÎIJ»ÓèÌÖÂÛ¡££©´úÂëÈçÏ£º
var values = [1, 2, 3, 4, 5];
//for Ñ»·
for(var i=0; i<values.length; i++){
process(values[i]);
}
//do-while Ñ»·
var j=0;
do{
process(values[j++]);
} while(j < values.length);
//while Ñ»·
var k=0;
while(k < values.length){
process(values[k++]);
}
ÿ¸öÑ»·Ê¾Àý¶¼»áµÃµ½ÏàͬµÄ½á¹û£º½«valuesÊý×éµÄËùÓÐÌõÄ¿´«Ë͵½processº¯Êý¡£
×Ðϸ¹Û²ì»á·¢ÏÖ£¬´úÂëÖÐÿ´ÎÑ»·Ö´Ðж¼»áµ÷Óà values.length ²é¿´ÊÇ·ñµ½´ïÊý×éβ²¿¡£µ÷Óà values.length ²é¿´Êý×鳤¶ÈÊǷdz£µÍЧµÄ£¬²¢ÇÒÔÚÑ»·Ö´ÐÐÖв¢²»»á¸Ä±ävaluesÊý×éµÄ³¤¶È¡£ ͨ¹ýʹÓñ¾µØ±äÁ¿Ìæ´úÊôÐÔ²éÕÒ½«»áÌá¸ßÑ»·µÄЧÂÊ¡£
var values = [1,2,3,4,5];
var length = values.length;
//for Ñ»·
for(var i=0; i<length; i++){
process(values[i]);
}
//do-while Ñ»·
var j=0;
do{
process(values[j++]);
} while(j < length);
//while Ñ»·
var k=0;
while(k < length){
process(values[k++]);
}
ÏÖÔÚÿ¸öÑ»·Ê¹Óñ¾µØ±äÁ¿ length Ìæ´úÁË values.length ,´Ó¶ø¼õÉÙÁËÿ´ÎÑ»·Ö´ÐÐÖÐÊôÐÔ²éÕÒµÄʱ¼ä¡£
ÁíÍâÒ»ÖÖ¼òµ¥µÄÌáÉýÑ»·Ð§Âʵķ½·¨ÊÇʹÓÃ×ܳ¤¶ÈÏò0µÝ¼õµÄ·½·¨Ìæ´ú´Ó0Ïò×ܳ¤¶ÈµÝÔöµÄ·½·¨¡£
var values = [1,2,3,4,5];
var length = values.length;
//for Ñ»·
for(var i=length; i--;){
process(values[i]);
}
//do-while Ñ»·
var j=length;
do{
process(values[--j]);
} while(j);
//while Ñ»·
var k=length;
while(k--){
process(values[k]);
}
Ìõ¼þÐÞ¸ÄΪµÈÓÚ0ºó£¬Ã¿¸öÑ»·µÄÖ´ÐÐЧÂÊÓÐÁËÏÔÖøµÄÌá¸ß¡££¨µ±Ñ»·±äÁ¿µÈÓÚ0ʱ£¬Ìõ¼þÅжÏΪtrue£©¡£
ÿÖÖÑ»·µÄÖ´ÐÐЧÂʶ¼ÊÇÏàͬµÄ£¬ËùÒÔÄã²¢²»ÐèÒª·³ÄÕÑ¡ÔñÄÄÖÖÑ»··½Ê½Ð§ÂÊ×î¸ß¡£
Ïà¹ØÎĵµ£º
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>js³ýÈ¥×Ö·û´®¿Õ¸ñ ......
Õâ¸öϵÁÐÎÄÕÂÖ÷ÒªÊǽ²ÊöʵÏÖJavascriptÍÏ×§¹¦ÄܵĻù´¡ÖªÊ¶£¬²¢½«ÔÚ×îºó¸ø³öÒ»¸öÍêÕûµÄʾÀý¡£Êʺ϶ÔÍÏ×§ÍêÈ«²»¶®µÄÈËÔĶÁ¡£
µÚһƪ¾ÍÏȽ²½²JavascriptÖеÄoffsetParentÊôÐÔ°É¡£
Ö§³ÖµÄä¯ÀÀÆ÷£ºInternet Explorer 4.0+£¬Mozilla 1.0+£¬Netscape 6.0+£¬Opera 7.0+£¬Safari ......
JavaScriptÔÊÐí´´½¨ºÍ´ò¿ª´ú±íHTMLÎı¾, form¶ÔÏóºÍframeµÄ´°¿Ú.
window¶ÔÏóÊÇJavaScript¿Í»§²ã´Î½á¹¹µÄ×î¶¥²ã¶ÔÏó,
formÔªËØºÍÈ«²¿JavaScript´úÂë¶¼ÊÇ´æÔÚÓÚÎĵµÖÐ,¶øÎĵµ±»×°Ôؽø´°¿Ú. ΪÁËÀí½â´°¿ÚÔõÑù¹¤×÷,Äã¿ÉÒÔ¿ØÖƲÙ×÷ÕâЩ´°¿Ú.
´ò¿ªºÍ¹Ø±Õ´°¿Ú
µ±
Óû§Æô¶¯(launch)Navigatorʱ,½«×Ô¶¯´´½¨Ò»¸ö´°¿Ú.Óû§»¹¿ÉÒ ......
Ч¹ûͼ
´úÂë:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>Scrollable</title>
<mce:script type="text/javascript"><!--
resizeCallback = function() {
......
//ϵͳÐÅÏ¢»ñÈ¡
function getSysInfo(){
var locator = new ActiveXObject ("WbemScripting.SWbemLocator");
var service = locator.ConnectServer(".");
//CPUÐÅÏ¢
var cpu = new Enumerator (service.ExecQuery("SELECT * from Win32_Processor")).item();
var cpuType=cpu.Name,h ......