JavaScript网页背景色生成器

小提示

Ctrl+/代码提示(需IE11)
F11键放大 ESC键缩小
PgUp上页 PgDn下页

推荐代码

运行代码缩小

引入JS
- 3.0.0 2.2.0 2.1.4 2.1.3 2.1.2 2.1.1 2.1.0 2.0.3 2.0.2 2.0.1 2.0.0 1.12.0 1.11.3 1.11.2 1.11.1 1.11.0 1.10.2 1.10.1 1.10.0 1.9.1 1.9.0 1.8.3 1.8.2 1.8.1 1.8.0 1.7.2 1.7.1 1.7 1.6.4 1.6.2 1.6.1 1.4.4 1.4.3 1.4.2 1.4.1 1.4.0
- 1.7.3 1.7.2 1.7.1.0 1.7.0.0
- 2.0.0-beta.0 2.0.0-alpha.55 1.5.0-rc.0 1.4.8 1.4.0 1.3.20 1.2.29 1.1.5 1.0.8
- 1.8.3 1.7.0 1.6.0 1.5.2 1.4.4 1.3.3 1.2.4 1.1.7
- 1.10.4 1.9.7 1.8.10 1.7.8 1.6.3 1.5.4 1.4.6 1.3.3
- core1.6.0 core-compat1.6.0 core1.5.2 core-compat1.5.2 core-full-compat-yc1.4.5 core-full-compat1.4.5 core-full-nocompat-yc1.4.5 core-full-nocompat1.4.5
- 1.4.2 1.4.1 1.4.0 1.3.0 1.2.0 1.1.0
- 3.7.3 3.7.2 3.7.1 3.7.0 3.7 3.6.2 3.6.1 3.6

引入框架
- 1.4.5 1.4.4 1.4.3 1.4.2 1.4.1 1.4.0 1.3.2
- 1.11.4 1.11.3 1.11.2 1.11.1 1.11.0 1.10.4 1.10.3 1.10.2
- 3.3.6 3.3.5 3.3.0 3.2.0 2.3.2

汉王

HTML代码

复制格式化注释注释清空

放大

<HTML>
<HEAD>
<TITLE>网页背景产生器</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
</HEAD>
<BODY>
<SCRIPT language=JavaScript>
function NumToHex(num1,num2) {
strNum=document.forms[0].elements[num1].value;
for(i = 0; i < strNum.length; i++) {
chr=strNum.substring(i, i + 1);
if((isNaN(chr))||(chr == ' ')) {
alert('You must enter a digit between 0 and 9!');
document.forms[0].elements[num1].select();
document.forms[0].elements[num2].value='';
return false;
}
}
if(strNum > 255) {
alert('You must enter a number between 0 and 255!');
document.forms[0].elements[num1].select();
document.forms[0].elements[num2].value='';
return false;
}
else {
base = strNum / 16;
rem = strNum % 16;
base = base - (rem / 16);
baseS = MakeHex(base);
remS = MakeHex(rem);
document.forms[0].elements[num2].value=baseS + '' + remS;
ChangeBackground(3, 4, 5);
return true;
}
}
function MakeHex(x) {
if((x >= 0) && (x <= 9))
return x;
else {
switch(x) {
case 10: return "A";
case 11: return "B";
case 12: return "C";
case 13: return "D";
case 14: return "E";
case 15: return "F";
    }
  }
}
function HexToNum(num1,num2) {
numberS = document.forms[0].elements[num1].value;
tens = MakeNum(numberS.substring(0,1));
if(tens == 'X') {
document.forms[0].elements[num1].select();
document.forms[0].elements[num2].value='';
return false;
}
ones = 0;
if(numberS.length > 1) // means two characters entered
ones=MakeNum(numberS.substring(1,2));
if(ones == 'X') {
document.forms[0].elements[num1].select();
document.forms[0].elements[num2].value='';
return false;
}
document.forms[0].elements[num2].value = (tens * 16) + (ones * 1);
document.forms[0].elements[num1].value = document.forms[0].elements[num1].value.toUpperCase();
ChangeBackground(3, 4, 5);
return true;
}
function MakeNum(str) {
if((str >= 0) && (str <= 9))
return str;
switch(str.toUpperCase()) {
case "A": return 10;
case "B": return 11;
case "C": return 12;
case "D": return 13;
case "E": return 14;
case "F": return 15;
default:  alert('You must choose a number between 0 and 9 or a letter between A and F!');
return 'X';
}
}
function ChangeBackground(num1, num2, num3) {
document.bgColor = '#'+document.forms[0].elements[num1].value + document.forms[0].elements[num2].value + document.forms[0].elements[num3].value;
}
</SCRIPT>
<FORM>
<TABLE cellPadding=10 align=center bgColor=white border=0>
<TBODY>
<TR bgColor=#000000>
  <TH><FONT color=#33ff33>Color/Code</FONT></TH>
  <TH><FONT color=#33ff33>Red</FONT></TH>
  <TH><FONT color=#33ff33>Green</FONT></TH>
  <TH><FONT color=#33ff33>Blue</FONT></TH></TR>
<TR bgColor=#000000>
  <TH><FONT color=#33ff33>0-255</FONT></TH>
  <TD><INPUT onKeyUp="return NumToHex(0,3);" maxLength=3 size=4
  name=rr_num></TD>
  <TD><INPUT onKeyUp="return NumToHex(1,4);" maxLength=3 size=4
  name=gg_num></TD>
  <TD><INPUT onKeyUp="return NumToHex(2,5);" maxLength=3 size=4
  name=bb_num></TD></TR>
<TR bgColor=#000000>
  <TH><FONT color=#33ff33>HEX</FONT></TH>
  <TD><INPUT onKeyUp="return HexToNum(3,0);" maxLength=2 size=4 name=rr_hex>
  </TD>
  <TD><INPUT onKeyUp="return HexToNum(4,1);" maxLength=2 size=4 name=gg_hex>
  </TD>
  <TD><INPUT onKeyUp="return HexToNum(5,2);" maxLength=2 size=4
  name=bb_hex></TD></TR></TBODY></TABLE></FORM>
</BODY>
</HTML>

CSS代码

复制格式化注释注释颜色清空

放大

JS代码

复制格式化注释注释清空

放大

运行代码

简介

请输入代码名称！

名称

JavaScript网页背景色生成器

分类

描述

JS写的网页背景颜色代码生成器，可适时预览背景颜色，在R、G、B三色文本框内输入颜色值，即可适时预览到网页背景色效果，如果是你要的颜色，就可以将上面的RGB三色值输入到你的CSS或HTML代码中即可，方法相当方便，为调试网页提供方便。