Below is online to find a piece of code, I want to add the following function in the following code, when the input is empty pop-up warning, input the value of the capital letters and Numbers only (or input lowercase when forced to uppercase) a combination of

 
<script SRC="https://bbs.csdn.net/js/jquery-2.1.1.min.js" & gt; </script> 
$(function () {

$(' # table DDR). Click (function () {
if(! $(this) is (' input ')) {
$(this). AddClass (' input '). The HTML (' & lt; Input type="text" value="' + $(this). The text () + '"/& gt; '). The find (' input '). The focus (). The blur (function () {
Var thisid=$(this). The parent (). The siblings (" th: eq (0) "). The text (); 
Var thisvalue=https://bbs.csdn.net/topics/$(this). Val (); 
Var thisclass=$(this). The parent (). The attr (" class "); 

$.post (" update. PHP, "
{
Thisid: (thisid), 
Thisclass: (thisclass), 
Thisvalue: (thisvalue) 
}); 


$(this). The parent (). RemoveClass (' input '). The HTML ($(this). Val () | | 0); 
}); 
} 
{}). Hover (function () 
$(this). AddClass (' hover '); 
}, function () {
$(this). RemoveClass (' hover '); 
}); 

}); 
</script> 

 

 
 The serial number & lt;/strong>  
 SN started & lt;/strong>  
 End of the SN & lt;/strong>  
 Release time & lt;/strong>  
 Operation & lt;/strong>  
 
 
 1 
 
 
 2020/6/18 now & lt;/td> 
 
 
 
 2 & lt;/td> 
 
 
 2020/6/18 now & lt;/td> 
 
 
 
 Release: & lt;/td> 
  CodePudding user response: 

On the HTML page and see if it is you need
 CodePudding user response: 
 
 reference chinaskysun reply: 3/f 
 
 & lt; Input type="text" onkeyup="this.value=https://bbs.csdn.net/topics/this.value.replace (/[^ a - zA - Z0-9]/, ' '). The toLocaleUpperCase ()" & gt; 

On the HTML page and see if it is you need 
 
 
I am to realize this function in the following code, because becomes input, click the cell would then make judgement, 
 & lt; Script SRC="https://bbs.csdn.net/js/jquery-2.1.1.min.js" & gt; </script> 
$(function () {

$(' # table DDR). Click (function () {
if(! $(this) is (' input ')) {
$(this). AddClass (' input '). The HTML (' & lt; Input type="text" value="' + $(this). The text () + '"/& gt; '). The find (' input '). The focus (). The blur (function () {
Var thisid=$(this). The parent (). The siblings (" th: eq (0) "). The text (); 
Var thisvalue=https://bbs.csdn.net/topics/$(this). Val (); 
Var thisclass=$(this). The parent (). The attr (" class "); 

$.post (" update. PHP, "
{
Thisid: (thisid), 
Thisclass: (thisclass), 
Thisvalue: (thisvalue) 
}); 


$(this). The parent (). RemoveClass (' input '). The HTML ($(this). Val () | | 0); 
}); 
} 
{}). Hover (function () 
$(this). AddClass (' hover '); 
}, function () {
$(this). RemoveClass (' hover '); 
}); 

}); 
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