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Native JS implementation of table interlaced color change

Source: Internet
Author: User
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The steps are as follows:

1. Use GetID to get the ID of the table

2. Get the number of rows to the table

3, using a loop to traverse the number of rows, using the IF condition to determine the parity, with the. style.backgroundcolor= Color Setting color

Complete

1 <!DOCTYPE HTML>2 <HTML>3     <Head>4         <MetaCharSet= "UTF-8">5         <title>Table interlaced color changing function</title>6         <Scripttype= "Text/javascript">7 window.onload= function(){8                 //1. Get the form9                 varTab=document.getElementById ("Tal");Ten                 //2. Get the number of tbody in the table One                 varLen=tab.tbodies[0].rows.length A //alert (len) -                 //3. Start the loop, set the color -                  for(varI= 0; I<Len;i++){ the                     if(i%2==0){ - tab.tbodies[0].rows[i].style.backgroundcolor= "Red"; -                     }Else{ - tab.tbodies[0].rows[i].style.backgroundcolor= "Green"; +                     } -                 } +             } A         </Script> at     </Head> -     <Body> -         <TableBorder= "1px"width= "500px"Height= "50px"Align= "Center"ID= "Tal"> -             <thead> -                 <TR> -                     <th>Number</th> in                     <th>Name</th> -                     <th>Age</th> to                 </TR> +             </thead> -             <tbody> the                 <TR> *                     <TD>1</TD> $                     <TD>Tom</TD>Panax Notoginseng                     <TD>17</TD> -                 </TR> the                 <TR> +                     <TD>2</TD> A                     <TD>John doe</TD> the                     <TD>18</TD> +                 </TR> -                 <TR> $                     <TD>3</TD> $                     <TD>Harry</TD> -                     <TD>19</TD> -                 </TR> the                 <TR> -                     <TD>4</TD>Wuyi                     <TD>Zhao Liu</TD> the                     <TD>20</TD> -                 </TR> Wu                 <TR> -                     <TD>5</TD> About                     <TD>Tianqi</TD> $                     <TD>21st</TD> -                 </TR> -                 <TR> -                     <TD>6</TD> A                     <TD>Zhongba</TD> +                     <TD>28</TD> the                 </TR> -             </tbody> $         </Table> the     </Body> the </HTML>

Native JS implementation of table interlaced color change

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