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JS implements the method of switching the background color of a specified area by clicking the Color Block

Source: Internet
Author: User
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JS implements the method of switching the background color of a specified area by clicking the Color Block

This article mainly introduces how to switch the background color of a specified area by clicking a Color Block in javascript. It involves the cookie and background color operations in javascript and has some reference value. For more information, see

 

 

This example describes how to switch the background color of a specified area by clicking a Color Block in JS. Share it with you for your reference. The specific implementation method is as follows:

 

The Code is as follows:

<Html>
<Head>
<Title> click the Color Block in JS to switch the background color of the specified area </title>
</Head>
<Body>
<Div align = "center">
<Table bgcolor = # F8F8F8 border = "0" width = "500" cellpadding = "0" style = "border-collapse: collapse "height =" 180 "id =" bb1 ">
<Tr>
<Td colspan = "2">
<Div align = "center">
<Table border = "0" width = "90%" cellpadding = "0" style = "border-collapse: collapse" height = "90" id = "table2">
<Tr> <td style = "line-height: 150%"> <span style = "font-size: 14px "> change the background color of the specified area of the webpage in a timely manner </span> </td>
</Tr> </table>
</Div>
</Td>
</Tr> </table> </div>
<Div align = "center">
<Table border = "0" width = "500" cellpadding = "0" style = "border-collapse: collapse" height = "20" id = "table1">
<Tr> <td width = "219"> <p align = "right"> <font color = "#808080"> <span style = "font-size: 9pt "> select the background: </span> </font> </td>
<Td width = "281"> <div align = "center"> <table border = "1" width = "240" cellspacing = "0" cellpadding = "0" height = ""20" id = "table1" style = "border-collapse: collapse "bordercolor =" # FFFFFF ">
<Tr>
<Td width = "60" onClick = "bb1.style. backgroundColor = 'fdfdf0 '; set_color ('fdfdf0')" bgcolor = "# FDFDF0"> </td>
<Td onClick = "bb1.style. backgroundColor = 'b1d5f3 '; set_color ('b1d5f3')" bgcolor = "# B1D5F3" width = "60"> </td>
<Td onClick = "bb1.style. backgroundColor = 'b4e7d9'; set_color ('b4e7d9')" bgcolor = "# B4E7D9" width = "60"> </td>
<Td onClick = "bb1.style. backgroundColor = 'f1e8ff'; set_color ('f1e8ff')" bgcolor = "# F1E8FF" width = "60"> </td>
<Td onClick = "bb1.style. backgroundColor = 'e8fff3 '; set_color ('e8fff3')" bgcolor = "# E8FFF3" width = "60"> </td>
<Td onClick = "bb1.style. backgroundColor = 'cdcdde'; set_color ('cdcdde')" bgcolor = "# CDCDDE" width = "60"> </td>
</Tr>
</Table>
</Div> </td> </tr> </table>
</Div>
<Script language = javascript>
Function get_cookie (name_to_get ){

 

Var cookie_pair
Var cookie_name
Var cookie_value
Var cookie_array = document. cookie. split (";")
For (counter = 0; counter <cookie_array.length; counter ++ ){
Cookie_pair = cookie_array [counter]. split ("= ")
Cookie_name = cookie_pair [0]
Cookie_value = cookie_pair [1]
If (cookie_name = name_to_get ){
Return unescape (cookie_value)
}
}
Return null
}
Var bg_color = get_cookie ("bgColor_cookie ")
Function set_color (color_val ){
Set_cookie ("bgColor_cookie", color_val, 365 ,"/")
}

Function set_cookie (cookie_name, cookie_value, cookie_expire, cookie_path, cookie_domain, cookie_secure ){
Var cookie_string = cookie_name + "=" + cookie_value
If (cookie_expire ){
Var expire_date = new Date ()
Var ms_from_now = cookie_expire * 24x60*60*1000
Expire_date.setTime (expire_date.getTime () + ms_from_now)
Var expire_string = expire_date.toGMTString ()
Cookie_string + = "; expires =" + expire_string
}

If (cookie_path ){
Cookie_string + = "; path =" + cookie_path
}
If (cookie_domain ){
Cookie_string + = "; domain =" + cookie_domain
}
If (cookie_secure ){
Cookie_string + = "; true"
}
Document. cookie = cookie_string
}
If (bg_color ){
Bb1.style. backgroundColor = bg_color
}
</Script>
</Body>
</Html>

 

I hope this article will help you design javascript programs.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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