JS limit the number of checkbox selected to limit six examples _javascript tips

Source: Internet
Author: User

I have a problem with the project today, I need to show multiple checkbox checkboxes, and I can only allow up to 6 selections. Debugging for a long while, finally came out, the code is as follows:

 <script language= "JavaScript" > var c=0,limit=6; 
function Docheck (obj) {obj.checked?c++:c--; 
if (c>limit) {obj.checked=false; 
Alert ("Over"); 
} </SCRIPT> 

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