Java,JavaScript,JScript Çø±ð
ÕâÈý¸öÓïÑÔ·Ö±ðÊÇÈý¸ö¹«Ë¾¿ª·¢µÄ£¬SUNµÄJava£¬NetscapeµÄJavaScript£¬MicrosoftµÄJScript
JavaScriptÊÇÓÉNetscape¹«Ë¾¿ª·¢²¢ËæNavigatorµ¼º½ÕßÒ»Æð·¢²¼µÄ¡¢½éÓÚJavaÓëHTMLÖ®¼ä¡¢»ùÓÚ¶ÔÏóʼþÇý¶¯µÄ±à³ÌÓïÑÔ£¬²»ÐèÒªJava±àÒëÆ÷£¬¶øÊÇÖ±½ÓÔËÐÐÔÚWebä¯ÀÀÆ÷ÖУ¬ËüµÄǰÉíÊÇLive Script¡£
JScriptÊÇÒ»ÖÖÀàËÆJavaScriptµÄÓïÑÔ¡£
JavaÊÇSUN¹«Ë¾ÍƳöµÄÐÂÒ»´úÃæÏò¶ÔÏóµÄ³ÌÐòÉè¼ÆÓïÑÔ£¬ÌرðÊʺÏÓÚInternetÓ¦ÓóÌÐò¿ª·¢£¬µ±È»Ò²¿ÉÒÔ¿ª·¢ÆäËüµÄÓ¦ÓóÌÐò£¬ÒÔǰÔÚ°²×°SYBASEºÍDB2µÄʱºò£¬ÎÒ¶¼×¢Òâ¶¼ËüÃǵݲװ³ÌÐòºÃÏó¶¼ÊÇÓÃJavaдµÄ¡£JavaµÄǰÉíÊÇOakÓïÑÔ
1.×ʼwebÉÏÖ»Óо²Ì¬µÄhtml
2.ΪÁËÂú×ã¸üºÃµÄ½»»¥ÐèÇó£¬netscape¿ª·¢ÁËÔÚNavigatorÖÐʹÓõÄLiveScriptÓïÑÔ£¬ºó¸ÄÃûΪJavaScript
3.Microsoft·¢ÐÐjscriptÓÃÓÚinternet explorer.
4.×î³õµÄjscriptºÍjavascript²îÒì¹ý´ó£¬web³ÌÐòÔ±²»µÃ²»Í´¿àµÄΪÁ½ÖÖä¯ÀÀÆ÷±àдÁ½Öֽű¾¡£ÓÚÊǵ®ÉúÁËECMAScript,ÊÇÒ»ÖÖ¹ú¼Ê±ê×¼»¯µÄjavascript°æ±¾¡£ÏÖÔÚµÄÖ÷Á÷ä¯ÀÀÆ÷¶¼Ö§³ÖÕâÖÖ°æ±¾¡£
5.ÎÒÃÇд³ÌÐòµÄʱºò×îºÃд<script language=javascript>¶ø²»ÊÇ<script language=jscript>ÒòΪjavascriptÊÇÒ»¸öͨÓõÄÃû³Æ£¬ËùÓÐä¯ÀÀÆ÷¶¼ÈÏʶ£¬¶øjscriptÖ»ÓÐIEÈÏʶ¡£
6.ÆäËûÓïÑÔϸ½ÚÉϵÄÇø±ð£¬²»ÊÇÒ»Á½ÏÂÄÜ˵ÍêµÄ¡£²»¹ýÎÒ¸öÈËÈÏΪ±à³Ìʱ×îºÃ×ñÑECMAscript±ê×¼¡£ÕâÑù¿ÉÒÔ±£Ö¤¼æÈÝÐÔ¡£
7.˳±ã˵һÏÂ,javascriptÔÀ´½ÐLivescript£¬ºóÀ´SunµÄjava·çÍ·ÕýÊ¢µÄʱºònetscape¾Í°ÑÃû×ָijÉjavascript¡£
Ïà¹ØÎĵµ£º
1. CSS
<style>
.dstyle1 {
font-size:13px;
font-weight: bold;
color: #ff6600;
}
.dstyle2 {
font-size:13px;
font-weight: bold;
color: #ffffff;
}
</style>
2. JavaScript
<script type="text/javascript">
m();
function m()
{
document.getElementById("span_new").classNa ......
ÒòΪJSON ÊÇ javascript µÄÒ»¸ö×Ó¼¯£¬ËùÒÔ£¬ÔÚjavascript ÖÐʹÓÃJSONÊǷdz£¼òµ¥µÄ¡£
js ´úÂë
var myJSONObject = {"bindings": [
{"ircEvent": "PRIVMSG", "method":&n ......
javascriptµ÷Óø¸´°¿ÚµÄº¯ÊýºÍ±äÁ¿
·¢²¼ÈÕÆÚ£º2008-05-28×î½ü¸üУº2008-05-28À´Ô´£ºBHCODE×÷Õߣº
web¿ª·¢µÄʱºò£¬ÓÐʱºòÐèҪʹÓÃÆäËûÒ³ÃæÉÏдºÃµÄjavasriptº¯Êý¡¢±äÁ¿¡£È絯³ö´°¿ÚÐèҪʹÓø¸´°¿ÚÖеĺ¯Êý£¬¿ò¼Ü1ÐèҪʹÓÿò¼Ü2Öеĺ¯Êý¡£
µ÷Óú¯Êý¡¢±äÁ¿µÄ·½·¨Ò»Ñù£¬¶¼ÊÇÐèÒªÊ×ÏÈ»ñµÃÄãÐèÒªµ÷Óõĺ¯ÊýËùÔÚµÄwindow¶ÔÏó ......
ÔÚjsÖУ¬Ã¿¸ö¶ÔÏó¶¼ÓÐÒ»¸öprototypeÊôÐÔ£º·µ»Ø¶ÔÏóÀàÐÍÔÐ͵ÄÒýÓ᣺ÜÞÖ¿Ú£¡Ï°Óï“ÒÀºù«»Æ°”£¬ÕâÀïµÄºù«¾ÍÊÇÔÐÍ£¬ÄÇô“ư.prototype” ·µ»ØµÄ¾ÍÊǺù«£¬»òÕߓư.prototype= new ºù«()”¡£
prototypeµÄÓÃ;£º
¼Ì³Ð
ÓÐÒ»¸ö¶ÔÏó££×ÓÀࣺ
function ×ÓÀà() {
this.lastname = ......
·µ»Ø JavaScript È«¾Ö¶ÔÏó²Î¿¼ÊÖ²á
¶¨ÒåºÍÓ÷¨
isNaN() º¯ÊýÓÃÓÚ¼ì²éÆä²ÎÊýÊÇ·ñÊÇ·ÇÊý×ÖÖµ¡£
Óï·¨
isNaN(x)
²ÎÊýÃèÊö
x
±ØÐè¡£Òª¼ì²âµÄÖµ¡£
·µ»ØÖµ
Èç¹û x ÊÇÌØÊâµÄ·ÇÊý×ÖÖµ NaN£¨»òÕßÄܱ»×ª»»ÎªÕâÑùµÄÖµ£©£¬·µ»ØµÄÖµ¾ÍÊÇ true¡£Èç¹û x ÊÇÆäËûÖµ,Ôò·µ»Ø false¡£
˵Ã÷
isNaN() º¯Êý¿ÉÓÃÓÚÅÐ¶ÏÆä²ÎÊýÊÇ·ñÊÇ NaN£ ......