Copy code The code is as follows: < ;meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> Untitled Document <br>function selectAll() <br>{ <br>var allCheckBoxs = document.getElementsByName("coffee"); <br>var desc = document.getElementById("like") ; <br>if(desc.value == "All like") <br>{ <br>desc.value = "None like"; <br>for(var i = 0; i < allCheckBoxs.length; i ) <BR>{ <BR>allCheckBoxs[i].checked = true; <BR>} <BR>} <BR>else <BR>{ <BR>desc.value = "All Like"; <BR>for (var i = 0; i < allCheckBoxs.length; i ) <BR>{ <BR>allCheckBoxs[i].checked = false; <BR>} <BR>} <BR>} <BR></script> ; <BR></head> <br><body> <br><p>What kind of coffee do you like</p> <br><form> <br><input type=" checkbox" name="coffee" value="cream">Blue Mountain Coffee<br> <br><input type="checkbox" name="coffee" value="sugar" >Mocha<br> <br><input type="checkbox" name="coffee" value="sugar">Latte<br> <br><input type="checkbox" name="coffee" value="sugar"> ;Cappuccino<br> <br><input type="checkbox" name="coffee" value="sugar">Irish Coffee<br> <br><input type="button" id ="like" value="Like all" onClick="selectAll()"> <br></form> <br></body> <br></html> <br> </div>
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