以下的代碼就可以,lz自己在*的地方填入星星的圖片就可以了
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body bgcolor=#ee3300
style
.drop { position: absolute; width: 3; filter: flipV(), flipH(); font-size: 40; color: #ffffff }
/style
script language="javascript"
snow = false; // false-rain; true-snow
snowsym = " * " are the symbols for each
rainsym = " * " can put images here.
howmany = 20 many drops/snowflakes?
/**************Do not need to change anything below***********/
if(snow){sym = snowsym; speed=1; angle=10; drops=howmany}
else{sym = rainsym; speed=30; drops=howmany; angle=6}
movex = -speed/angle; movey = speed; count = 0;
function moverain(){
for(move = 0; move drops; move++){
xx[move]+=movex; yy[move]+=mv[move];
hmm = Math.round(Math.random()*1);
if(xx[move] 0){xx[move] = maxx+10;}
if(yy[move] maxy){yy[move] = 10;}
drop[move].left = xx[move]
drop[move].top = yy[move]+document.body.scrollTop;
}setTimeout('moverain()','1')}
/script
script language="javascript"
if (document.all){
drop = new Array(); xx = new Array(); yy = new Array(); mv = new Array()
ly = "document.all[\'"; st = "\'].style"
for(make = 0; make drops; make++){
document.write('div id="drop'+make+'" class=drop'+sym+'/div');
drop[make] = eval(ly+'drop'+make+st);
maxx = document.body.clientWidth-40
maxy = document.body.clientHeight-40
xx[make] = Math.random()*maxx;
yy[make] = -100-Math.random()*maxy;
drop[make].left = xx[make]
drop[make].top = yy[make]
mv[make] = (Math.random()*5)+speed/16;
drop[make].fontSize = (Math.random()*10)+20;
if(snow){col = 'white'}else{col = 'white'}
drop[make].color = col;
}
window.onload=moverain
}
/script
/body
javascript java是兩種完全不同的語(yǔ)言也許javascrtpt的名字叫做" zzz "就不會(huì)有人糊涂了
javascrtpt 客戶端腳本具有簡(jiǎn)單的面向?qū)ο筇卣?/p>
java 是完全的面向?qū)ο笳Z(yǔ)言 運(yùn)行在jvm(java虛擬機(jī))上。也可以用來(lái)編寫B(tài)\S(俗稱:網(wǎng)頁(yè))程序
jquery是一款javascrtpt庫(kù)
jsp是java server page 也就是包含java代碼的網(wǎng)頁(yè)
javascrtpt操作的是dom實(shí)現(xiàn)的“動(dòng)態(tài)”效果 就是頁(yè)面動(dòng)畫效果,注意這并不是真正的"動(dòng)態(tài)" 這只是javascrtpt特效
jsp(java)是可以操作數(shù)據(jù)庫(kù)實(shí)現(xiàn)動(dòng)態(tài)效果(與靜態(tài)頁(yè)面相對(duì),動(dòng)態(tài)頁(yè)面是服務(wù)器根據(jù)數(shù)據(jù)庫(kù)中的內(nèi)容動(dòng)態(tài)生成后發(fā)送到瀏覽器上的)
至于jquery 我認(rèn)為需要先了解一些dom知識(shí)和原生javascrtpt特征后再去學(xué)習(xí)會(huì)更好
對(duì)于jsp的話 雖然是是以java為基礎(chǔ) 但是用到j(luò)ava的地方并特別不多。所以可以直接去學(xué)jsp但是有一點(diǎn)很總要 要先去理解面向?qū)ο蟮母拍?,封裝思想等
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class Test{
private JFrame frame;
private String scrolledText;
private String str ="滾動(dòng)文字 Demo";
public static void main(String args[]) {
try{
Test window = new Test();
window.frame.setVisible(true);
}
catch(Exception e){
e.printStackTrace();
}
}
public Test(){
initialize();
}
private void initialize(){
frame.setBounds(100, 100, 500, 375);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JPanel panel = new JPanel();
panel.setBackground(Color.WHITE);
panel.setLayout(new BorderLayout());
frame.getContentPane().add(panel, BorderLayout.NORTH);
final JLabel label = new JLabel();
label.setText("New JLabel");
panel.add(label);
label_scrolledText(label);
frame.addComponentListener(
new ComponentAdapter(){
public void componentResized(ComponentEvent arg0){
label_scrolledText(label);
}
});
}
public void label_scrolledText(JLabel label) {
this.scrolledText = this.str;
label.setText(scrolledText);
FontMetrics metrics = label.getFontMetrics(label.getFont());
int textW = metrics.stringWidth(label.getText());
Dimension frameSize = frame.getSize();
for (int i = 1; i = (frameSize.width - textW) / 3 - 3; i++)
scrolledText += " ";
label.setText(scrolledText);
Thread thread = new Thread(new TextChanger(label));
thread.start();
}
}
java.lang.NullPointerException
at Test.initialize(Test.java:26)
at Test.init(Test.java:23)
at Test.main(Test.java:16)
本文名稱:java都是特效代碼嗎 java都是特效代碼嗎知乎
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