Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

JavaScript±à³Ì±Ê¼Ç

ÐÂÖÐ……
1¡¢Êý¾ÝÀàÐÍÑéÖ¤ÎÊÌâ
  Asp.NetËäÈ»ÓÐÑéÖ¤¿Ø¼þ£¬µ«ÊÇÓÐЩ¸´ÔÓµÄÑéÖ¤»¹Êǵô«µ½·þÎñÆ÷ÉϽøÐУ¬ÓÃjsËٶȺÍÐÔÄܶ¼±È½ÏºÃ
<script>
 //¼ì²éÊÇ·ñΪÈÎÒâÊý£¨ÊµÊý£©
function isNumeric(strNumber) {
var newPar=/^(-|\+)?\d+(\.\d+)?$/
alert(newPar.test(strNumber)); }
 //¼ì²éÊÇ·ñΪÕýÊý
function isUnsignedNumeric(strNumber) {
var newPar=/^\d+(\.\d+)?$/
alert(newPar.test(strNumber)); }
//¼ì²éÊÇ·ñΪÕûÊý
function isInteger(strInteger) {
var newPar=/^(-|\+)?\d+$/
alert(newPar.test(strInteger)); }
//¼ì²éÊÇ·ñΪÕýÕûÊý
function isUnsignedInteger(strInteger) {
var newPar=/^\d+$/
alert(newPar.test(strInteger)); }
</script>
2¡¢asp.netÖÐÓÃalert£¨£©ÊµÏÖ»»ÐÐÎÊÌâ
     asp.netÖÐÓÃresponse.Write("<script>alert('Ìáʾ£º\n²Ù×÷³ö´í£¡');</script>");ÎÞ·¨Ö´ÐС£
     ½«×Ö·û´®Ð´³É
     say="Ìáʾ£º\\n²Ù×÷³ö´í£¡"
     say=@"Ìáʾ£º\n²Ù×÷³ö´í£¡"
  
 3¡¢jsʵÏÖË¢ÐÂÑéÖ¤Âë
     µ¥»÷ͼƬˢУº
<img id="CheckImg" src="CreatImage.aspx" onclick="this.src='CreatImage.aspx?temp='+Math.random()"/>
     µ¥»÷“Ë¢ÐÂÑéÖ¤Âë”°´Å¥Ë¢ÐÂ
    function imagechick()
   {
     form1.CheckImg.src="CreatImage.aspx?temp="+Math.random();
     return false;//²»ÉÏ´«µ½·þÎñÆ÷
   }
     ÆäÖÐCreatImage.aspxΪ²úÉúÑéÖ¤ÂëͼƬµÄÒ³Ãæ£¬Ô´Âë¼û£ºC#²úÉúͼÐÎÑéÖ¤Âë
4¡¢jsÖÐʹÓÃÕýÔò±í´ïʽµÄ·½·¨
    ¸ñʽÊÇ£º/ÕýÔò±í´ïʽ/
    ±ØÐëÓÃÁ½¸öб¸Ü°ÑÕýÔò±í´ïʽÀ¨ÆðÀ´¡£
   Èç·Ç·¨×Ö·û¼ì²âÕýÔò±í´ïʽΪ£º^(?:[\u4e00-\u9fa5]*\w*\s*)+$
   ʹÓõĴúÂëΪ£º
      var newPar=/^(?:[\u4e00-\u9fa5]*\w*\s*)+$/;
      if(newPar.test("1234&1238*_~"))
      {
         &


Ïà¹ØÎĵµ£º

[·­Òë]High Performance JavaScript(013)

Conditionals  Ìõ¼þ±í´ïʽ
    Similar in nature to loops, conditionals determine how execution flows through JavaScript. The traditional argument of whether to use if-else statements or a switch statement applies to JavaScript just as it does to other languages. Since different b ......

[·­Òë]High Performance JavaScript(020)

Yielding with Timers  Óö¨Ê±Æ÷Èóöʱ¼äƬ
    Despite your best efforts, there will be times when a JavaScript task cannot be completed in 100 milliseconds or less because of its complexity. In these cases, it's ideal to yield control of the UI thread so that UI updates may occur ......

[·­Òë]High Performance JavaScript(027)

µÚ¾ÅÕÂ
Building and Deploying High-Performance JavaScript Applications
´´½¨²¢²¿Êð¸ßÐÔÄÜJavaScriptÓ¦ÓóÌÐò
    According to a 2007 study by Yahoo!'s Exceptional Performance team, 40%–60% of Yahoo!'s users have an empty cache experience, and about 20% of all page views are done ......

[·­Òë]High Performance JavaScript(029)

Working Around Caching Issues  ¹ØÓÚ»º´æÎÊÌâ
    Adequate cache control can really enhance the user experience, but it has a downside: when revving up your application, you want to make sure your users get the latest version of the static content. This is accomplished by renaming ......

JavaScript±à³Ì±Ê¼Ç

ÐÂÖÐ……
1¡¢Êý¾ÝÀàÐÍÑéÖ¤ÎÊÌâ
  Asp.NetËäÈ»ÓÐÑéÖ¤¿Ø¼þ£¬µ«ÊÇÓÐЩ¸´ÔÓµÄÑéÖ¤»¹Êǵô«µ½·þÎñÆ÷ÉϽøÐУ¬ÓÃjsËٶȺÍÐÔÄܶ¼±È½ÏºÃ
<script>
 //¼ì²éÊÇ·ñΪÈÎÒâÊý£¨ÊµÊý£©
function isNumeric(strNumber) {
var newPar=/^(-|\+)?\d+(\.\d+)?$/
alert(newPar.test(strNumber)); }
 //¼ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ