javascript common

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].