1. The vertical line in the frame (a self-made graph) can be left and right to change the frame. Attachment: splitor Project
Splitor.html
<HTML>
<Head>
<Title> </title>
<Link href = "CSS/public.css" rel = "stylesheet" type = "text/CSS"/>
<SCRIPT type = "text/JavaScript">
Function showhide (titl ){
If (titl = "Left "){
Document. All. img1.src = "images/rightmove.gif ";
Top.doc ument. getelementbyid ("Middle"). Cols = ", *"; // enables the upper-level page, that is, the column entries of the frame page are aligned to the rightmost
Document. All. img1.title = "right ";
} Else {
Document. All. img1.src = "images/leftmove.gif ";
Top.doc ument. getelementbyid ("Middle "). cols = ", *"; // enables the upper-level page, that is, the column entries on the frame page are aligned to the leftmost, which is also the initial form.
Document. All. img1.title = "Left ";
}
}
</SCRIPT>
</Head>
<Body leftmargin = "0" topmargin = "0">
<Table Style = "cursor: hand "width =" 100% "Height =" 100% "background =" images/splitor7.gif "border =" 0 "cellspacing =" 0 "cellpadding =" 0 ">
<Tr>
<TD align = "center" valign = "Middle"> </TD>
</Tr>
</Table>
</Body>
2. Text Box Verification:
Check. js (defined attribute rules allownull, isdigital, isint, allowzero, isdate, and usage)
// Check. js starts
// Usage: Call return checkownrule (objfrm) in the form submission event );
// The input parameter is the current form object. The premise of using this function is that the page must contain check. js
Function checkownrule (objfrm ){
// Verify the input
VaR inputobj = objfrm. getelementsbytagname ("input ");
For (I = 0; I <inputobj. length; I ++ ){
If (! Inputobj (I). getattribute ("hint") | inputobj (I). getattribute ("hint") = "")
{
Strhint = inputobj (I). Name;
} Else {
Strhint = inputobj (I). getattribute ("hint ");
}
// Do not leave it blank
// For example: <input type = "text" name = "username" allownull = "false" hint = "username">
If (inputobj (I). getattribute ("allownull") = "false "){
If (inputobj (I). value = ""){
Alert (strhint + "cannot be blank! ");
Return false;
}
}
// Only a number is allowed
// For example: <input type = "text" name = "username" isdigital = "true" hint = "username">
If (inputobj (I). getattribute ("isdigital") = "true "){
If (inputobj (I). value! = "" & Isnan (inputobj (I). Value )){
Alert (strhint + "must be a number! ");
Inputobj (I). Focus ();
Return false;
}
}
// Only an integer is allowed.
// For example: <input type = "text" name = "username" isint = "true" hint = "username">
If (inputobj (I). getattribute ("isint") = "true "){
If (inputobj (I). value. indexof (".")> = 0 ){
Alert (strhint + "must be an integer! ");
Inputobj (I). Focus ();
Return false;
}
}
// Do not enter 0
// For example: <input type = "text" name = "username" allowzero = "false" hint = "username">
If (inputobj (I). getattribute ("allowzero") = "false "){
If (inputobj (I). value = 0 ){
Alert (strhint + "cannot be 0! ");
Inputobj (I). Focus ();
Return false;
}
}
// Date only
// For example, <input type = "text" name = "username" isdate = "true" hint = "date">
If (inputobj (I). getattribute ("isdate") = "true "){
If (inputobj (I). value! = ""&&! Checkdate (inputobj (I). Value )){
Alert (strhint + "must be in the correct date format! ");
Inputobj (I). Focus ();
Return false;
}
}
}
// Verify select
VaR selectobj = objfrm. getelementsbytagname ("select ");
For (I = 0; I <selectobj. length; I ++ ){
If (! Selectobj (I). getattribute ("hint") | selectobj (I). getattribute ("hint") = "")
{
Strhint = selectobj (I). Name;
} Else {
Strhint = selectobj (I). getattribute ("hint ");
}
// Cannot be blank
// For example: <select name = "XXX" allownull = "false" hint = "drop-down list">
If (selectobj (I). getattribute ("allownull") = "false "){
If (selectobj (I). value = ""){
Alert (strhint + "cannot be blank! ");
Selectobj (I). Focus ();
Return false;
}
}
}
// Verify textarea
VaR areaobj = objfrm. getelementsbytagname ("textarea ");
For (I = 0; I <areaobj. length; I ++ ){
If (! Areaobj (I). getattribute ("hint") | areaobj (I). getattribute ("hint") = "")
{
Strhint = areaobj (I). Name;
} Else {
Strhint = areaobj (I). getattribute ("hint ");
}
// Cannot be blank
// Example: <textarea name = "zysm" allownull = "false" hint = "professional description">
If (areaobj (I). getattribute ("allownull") = "false "){
If (areaobj (I). value = ""){
Alert (strhint + "cannot be blank! ");
Areaobj (I). Focus ();
Return false;
}
}
}
Return true;
}
// This function is a function that checks whether it is a date. The above method is called.
Function checkdate (STR ){
VaR Reg =/^ (/d +)-(/d {1, 2})-(/d {1, 2}) $ /;
VaR r = Str. Match (REG );
If (r = NULL) return false;
R [2] = R [2]-1;
VaR d = new date (R [1], R [2], R [3]);
If (D. getfullyear ()! = R [1]) return false;
If (D. getmonth ()! = R [2]) return false;
If (D. getdate ()! = R [3]) return false;
Return true;
}
// Check. js ended
Extended usage
The verification submission function is:
Function tijiao (objform ){
If (checkownrule (objform) {// you can use the above verification function (true if all of them are satisfied). The following is the extension part.
VaR Bz = Document. All. ZP. value;
If (BZ! = ""){
Reg = //. ([^/.] +) $ /;
VaR e=reg.exe C (BZ) [1]. tolowercase ();
If (E! = "Jpg" & E! = "BMP" & E! = "GIF "){
Alert ("image format files must be uploaded! ");
Return false;
}
}
Return true;
} Else {
Return false;
}
}
3. Use SQL to query in eclipse
Connection: Open the DB browser in the perspective, edit the database to be connected, and connect to the database.
Test: Write A *. SQL script, select the statement to be executed, and click the statement key.
SQL result
4. Import jar
Copying to lib
Sometimes another method is required: click Project/build path/Add Library/user Library/create/Add jar
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