JavaScript实现渐变色效果(不使用图片)

<title>JavaScript渐变色</title> <script language="JavaScript1.2"> <!-- if (document.all){ one=new Array(); two=new Array(); var a=10;var b=11;var c=12;var d=13;var e=14;var f=15; var width = 350; var height = 20; var gap = 5; var direction = 0; //colour number 1 - enter 1st, 3rd and 5th numbers/letters of colour code one[0]=f; one[1]=f; one[2]=0; //colour number 2 - enter 1st, 3rd and 5th numbers/letters of colour code two[0]=0; two[1]=c; two[2]=0; //end configuration if(direction==0) var num = width / gap; if(direction==1) var num = height / gap; color2=new Array(); color1=new Array(); diff=new Array(); for(i=0;i<3;i++) { diff[i] = two[i] - one[i]; diff[i] = diff[i] / num; } for(i=0;i<3;i++){ color1[i] = Math.round(diff[i] * Math.pow(10, 0)); if(color1[i] > diff[i])color1[i] = color1[i] - 1; color2[i] = diff[i] - color1[i]; color2[i] = color2[i] * 15; color2[i] = Math.round(color2[i] * Math.pow(10, 0)); } x=new Array(); two[0]=0; two[1]=0; two[2]=0; document.write('<table border="0" cellpadding="0" cellspacing="0" width="'+width+'" height="'+height+'">'); if(direction==0) document.write('<tr>'); for(i=0;i<=num;i++) { if(direction==1) document.write('<tr>'); document.write('<td bgcolor="#'); for(j=0;j<3;j++) { if(one[j]==a)document.write("a"); if(one[j]==b)document.write("b"); if(one[j]==c)document.write("c"); if(one[j]==d)document.write("d"); if(one[j]==e)document.write("e"); if(one[j]==f)document.write("f"); if(one[j]<10)document.write(one[j]); if(two[j]==a)document.write("a"); if(two[j]==b)document.write("b"); if(two[j]==c)document.write("c"); if(two[j]==d)document.write("d"); if(two[j]==e)document.write("e"); if(two[j]==f)document.write("f"); if(two[j]<10)document.write(two[j]); one[j] = one[j] + color1[j]; two[j] = two[j] + color2[j]; if(two[j]>15) { two[j] = two[j] - 15; one[j]++; } } if(direction==0) document.write('" width="'+gap+'" height="'+height+'"> </td>'); if(direction==1) document.write('" width="'+width+'" height="'+gap+'"> </td></tr>'); } document.write('</table>'); } //--> </script>
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