Select the checkbox button to ash or the button is available

  • 2020-03-30 03:04:13
  • OfStack

 
<pre name="code" class="html"><html> 
<head> 
<script> 
function asd(){ 
var reg=document.getElementsByName("reg"); 
if(reg[0].checked){ 
document.getElementById("submit").disabled=false; 
} 
else { 
document.getElementById("submit").disabled=true; 

} 
} 
</script> 

</head> 
<body> 
<input name="reg" type="checkbox" onclick="asd();" /> Did you read it?  
<input type="submit" value=" registered " id="submit" disabled/> 
</body> 
</html></pre><br> 
<br> 
<pre></pre> 
<pre></pre> 

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