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

JavaScript toFixed() ·½·¨

±¾ÎÄת×Ô£ºhttp://www.w3school.com.cn/js/jsref_tofixed.asp
¶¨ÒåºÍÓ÷¨
toFixed() ·½·¨¿É°Ñ Number ËÄÉáÎåÈëΪָ¶¨Ð¡ÊýλÊýµÄÊý×Ö¡£
Óï·¨
NumberObject.toFixed(num) 
²ÎÊýnumÃèÊö±ØÐè¡£¹æ¶¨Ð¡ÊýµÄλÊý£¬ÊÇ 0 ~ 20 Ö®¼äµÄÖµ£¬°üÀ¨ 0 ºÍ 20£¬ÓÐЩʵÏÖ¿ÉÒÔÖ§³Ö¸ü´óµÄÊýÖµ·¶Î§¡£Èç¹ûÊ¡ÂÔÁ˸òÎÊý£¬½«Óà 0 ´úÌæ¡£
·µ»ØÖµ
·µ»Ø NumberObject µÄ×Ö·û´®±íʾ£¬²»²ÉÓÃÖ¸Êý¼ÆÊý·¨£¬Ð¡ÊýµãºóÓй̶¨µÄ num λÊý×Ö¡£Èç¹û±ØÒª£¬¸ÃÊý×ֻᱻÉáÈ룬Ҳ¿ÉÒÔÓà 0 ²¹×㣬ÒÔ±ãËü´ïµ½Ö¸¶¨µÄ³¤¶È¡£Èç¹û num ´óÓÚ le+21£¬Ôò¸Ã·½·¨Ö»µ÷Óà NumberObject.toString()£¬·µ»Ø²ÉÓÃÖ¸Êý¼ÆÊý·¨±íʾµÄ×Ö·û´®¡£
Å׳ö
µ± num ̫С»òÌ«´óʱÅ׳öÒì³£ RangeError¡£0 ~ 20 Ö®¼äµÄÖµ²»»áÒý·¢¸ÃÒì³£¡£ÓÐЩʵÏÖÖ§³Ö¸ü´ó·¶Î§»ò¸üС·¶Î§ÄÚµÄÖµ¡£
µ±µ÷Óø÷½·¨µÄ¶ÔÏó²»ÊÇ Number ʱÅ׳ö TypeError Òì³£¡£
ʵÀý
ÔÚ±¾ÀýÖУ¬ÎÒÃǽ«°ÑÊý×ÖÉáÈëΪ½öÓÐһλСÊýµÄÊý×Ö£º
Show the number 13.37 with one decimal:
<script type="text/javascript">
var num = new Number(13.37);
document.write (num.toFixed(1))
</script>
Êä³ö£º
Show the number 13.37 with one decimal:
13.4


Ïà¹ØÎĵµ£º

javascriptÈÕÆÚÅжÏ

function checkserch()
{
    var stratTime =document.all("startdate").value;
    var endTime = document.all("enddate").value;
    var arr1=stratTime.split("-");
    var arr2=endTime.split("-");
    if((stratTime == '' &a ......

JavaScript ÖÐʹÓà replace ´ïµ½ replaceAllµÄЧ¹û

·½·¨£º string.replace(new RegExp(oldString,"gm"),newString))
gm  g=global, m=multiLine£¬´óÖÂÉÏ·½·¨¾ÍÊÇÕâÑùµÄ£¬¿ÉÒÔʵÏÖÌæ»»È«²¿Ö¸¶¨×Ö´®
ÁíÒ»¸ö¼òµ¥µÄÑéÖ¤JSµÄ·½·¨£º
ÔÚä¯ÀÀÆ÷µØÖ·À¸ÊäÈë
javascript:alert("abcabcabc".replace(new RegExp("a","gm"),"ad&quo ......

ÓÃAcrobat JavaScript¹Ø±ÕPDF

function openCheck()
{
if (!this.external)
{
app.alert("Acrobat¤Ç¤Ï実ÐФǤ­¤Þ¤»¤ó");
this.closeDoc(true);
// var myDoc = event.target;
// myDoc.closeDoc(true);
}
}
openCheck();
 
ÐèҪעÒâµÄÊÇ:
1. ÉÏÊöµÄsourceÖ»ÄÜÔÚPDF ÓÃAcrobat Reader´ò¿ªÊ±²ÅÆð×÷ÓÃ,
ÈçÓÃIEµÈ´ò¿ªÊ±»á±¨¡¸NotSu ......

JavaScript¼üÅÌ

JavaScript¼üÅÌʼþÕìÌý
ÔÚʹÓÃJavaScript×öWEB¼üÅÌʼþÕìÌý²¶»ñʱ£¬Ö÷Òª²ÉÓÃonkeypress¡¢onkeydown¡¢onkeyupÈý¸öʼþ½øÐгöÀ´¡£¸ÃÈý¸öʼþµÄÖ´ÐÐ˳ÐòÈçÏ£ºonkeydown -> onkeypress ->onkeyup¡£ÔÚÒ»°ãÇé¿öÏ£¬²ÉÓÃÈýÖÖ¼üÅÌʼþ¾ù¿É¶Ô¼üÅÌÊäÈë½øÐÐÓÐЧµÄÏìÓ¦¡£µ±ÔÚʵ¼ÊʹÓÃÖУ¬»á·¢ÏÖÕ⼸ÕßÓÐЩ²»Í¬µÄ²î±ð¡£
  ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ