107ÌõJavascriptµÄ³£ÓÃÓï¾ä
1. document.write( " "); Êä³öÓï¾ä
2.JSÖеÄ×¢ÊÍΪ//
3.´«Í³µÄHTMLÎĵµË³ÐòÊÇ:document- >html- >(head,body)
4.Ò»¸öä¯ÀÀÆ÷´°¿ÚÖеÄDOM˳ÐòÊÇ:window- >(navigator,screen,history,location,document)
5.µÃµ½±íµ¥ÖÐÔªËصÄÃû³ÆºÍÖµ:document.getElementById( "±íµ¥ÖÐÔªËصÄID號 ").name(»òvalue)
6.Ò»¸öСдת´óдµÄJS: document.getElementById( "output ").value = document.getElementById( "input ").value.toUpperCase();
7.JSÖеÄÖµÀàÐÍ:String,Number,Boolean,Null,Object,Function
8.JSÖеÄ×Ö·ûÐÍת»»³ÉÊýÖµÐÍ:parseInt(),parseFloat()
9.JSÖеÄÊý×Öת»»³É×Ö·ûÐÍ:( " " ±äÁ¿)
10.JSÖеÄÈ¡×Ö·û´®³¤¶ÈÊÇ:(length)
11.JSÖеÄ×Ö·ûÓë×Ö·ûÏàÁ¬½ÓʹÓÃ號.
12.JSÖеıȽϲÙ×÷·ûÓÐ:==µÈÓÚ,!=²»µÈÓÚ, >, >=, <. <=
13.JSÖÐÉùÃ÷±äÁ¿Ê¹ÓÃ:varÀ´½øÐÐÉùÃ÷
14.JSÖеÄÅж¨Óï¾ä½á¹¹:if(condition){}else{}
15.JSÖеÄÑ»·½á¹¹:for([initial expression];[condition];[upadte expression]) {inside loop}
16.Ñ»·ÖÐÖ¹µÄÃüÁîÊÇ:break
17.JSÖеĺ¯Êý¶¨Òå:function functionName([parameter],...){statement[s]}
18.µ±ÎļþÖгöÏÖ¶à¸öform±íµ¥Ê±.¿ÉÒÔÓÃdocument.forms[0],document.forms[1]À´´úÌæ.
19.´°¿Ú:´ò¿ª´°¿Úwindow.open(), ¹Ø±ÕÒ»¸ö´°¿Ú:window.close(), ´°¿Ú±¾Éí:self
20.×´態À¸µÄÉèÖÃ:window.status= "×Ö·û ";
21.µ¯³öÌáʾÐÅÏ¢:window.alert( "×Ö·û ");
22.µ¯³ö確ÈÏ¿ò:window.confirm();
23.µ¯³öÊäÈëÌáʾ¿ò:window.prompt();
24.Ö¸¶¨µ±Ç°ÏÔʾÁ´½ÓµÄλÖÃ:window.location.href= "URL "
25.È¡³ö´°ÌåÖеÄËùÓÐ±íµ¥µÄÊýÁ¿:document.forms.length
26.¹Ø±ÕÎĵµµÄÊä³öÁ÷:document.close();
27.×Ö·û´®×·¼ÓÁ¬½Ó·û: =
28.´´½¨Ò»¸öÎĵµÔªËØ:document.createElement(),document.createTextNode()
29.µÃµ½ÔªËصķ½·¨:document.getElementById()
30.ÉèÖÃ±íµ¥ÖÐËùÓÐÎı¾Ð͵ijÉÔ±µÄֵΪ¿Õ:
var form = window.document.forms[0]
for (var i = 0; i <form.elements.length;i ){
if (form.elements.type == "text "){
form.elements.value = " ";
}
}
31.¸´Ñ¡°´Å¥ÔÚJSÖÐÅж¨ÊÇ·ñÑ¡ÖÐ:document.forms[0].checkThis.checked (checkedÊôÐÔ´ú±íΪÊÇ·ñÑ¡Öзµ»ØTRUE»òFALSE)
32.µ¥Ñ¡°´Å¥×é(µ¥Ñ¡°´Å¥µÄÃû³Æ±ØÐëÏàͬ):È¡µ¥Ñ¡°´Å¥×éµÄ³¤¶Èdocument.forms[0].groupName.length
33.µ¥Ñ¡°´Å¥×éÅж
Ïà¹ØÎĵµ£º
Summary ×ܽá
When web pages or applications begin to feel slow, analyzing assets as they come over the wire and profiling scripts while they are running allows you to focus your optimization efforts where they are needed most.
µ±ÍøÒ³»òÓ¦ÓóÌÐò±äÂýʱ£¬·ÖÎ ......
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 ......
JSON:
[{"subjecttypeId":"1","subjectName":"67","scope":"1",},{"subjecttypeId":"1","subjectName":"345","scope":"1"}]
JavaScript:
var result = window.eval('(' + JSON+ ')');
for(var p in result){
result[p].subjectName;
alert(result[p] ......
JavascriptÎļþ¼°Îļþ¼Ð²Ù×÷
Ò»¡¢¹¦ÄÜʵÏÖºËÐÄ£ºFileSystemObject ¶ÔÏó
ÒªÔÚjavascriptÖÐʵÏÖÎļþ²Ù×÷¹¦ÄÜ£¬Ö÷Òª¾ÍÊÇÒÀ¿¿FileSystemobject¶ÔÏó¡£
¶þ¡¢FileSystemObject±à³Ì
ʹÓÃFileSystemObject ¶ÔÏó½øÐбà³ÌºÜ¼òµ¥£¬Ò»°ãÒª¾¹ýÈçϵIJ½Ö裺 ´´½¨FileSystemObject¶ÔÏó¡¢Ó¦ÓÃÏà¹Ø·½·¨¡¢· ......
±¾ÎļòÒª½éÉÜJavaScriptÖÐconfirm,alert,promptµÄÓ÷¨,Ï£Íû´ó¼Òѧϰ¹ý³ÌÖÐÄܵõ½Ò»Ð©Æô·¢¡£
window.confirm ²ÎÊý¾ÍÖ»ÓÐÒ»¸ö¡£ÏÔʾÌáʾ¿òµÄÐÅÏ¢¡£°´È·¶¨,·µ»Øtrue£»°´È¡Ïû·µ»Øfalse¡£
< SCRIPT> var bln = window.confirm("È·¶¨Âð?"); alert(bln) < /SCRIPT> window.alert²ÎÊý£¬Ö»ÓÐ ......