[英]Multiple Checkbox validation at javascript
i have multiple checkbox, and all of it must be checked. 我有多个复选框,并且必须选中所有复选框。 i write down the code but it doesnt work.
我写下了代码,但没有用。
this is the code html sample:: 这是代码html示例::
<form name="pembres" id="pembres" method="POST" onSubmit="return validateform()" style="margin:0;">
<input type="checkbox" name="lanjut[]" value="setuju2" />
<input type="checkbox" name="lanjut[]" value="setuju3" />
<input type="checkbox" name="lanjut[]" value="setuju4" />
<input type="checkbox" name="lanjut[]" value="setuju5" />
<input type="submit" value="Next Step" name="next" />
</form>
1st script at head tag 头标处的第一个脚本
<script type="text/javascript">
function validateform(){
var success = false;
for (i = 0; i < document.pembres.elements['lanjut[]'].length; i++){
if (document.pembres.elements['lanjut[]'][i].checked){
success = true;
}
}
return success;
}
</script>
2nd script before /body / body之前的第二个脚本
<script type="text/javascript">
var form = document.getElementById('pembres');
form.onsubmit = validateForm;
function validateForm() {
var isValid = false,
form = this,
els = form.elements['lanjut[]'];
i;
for (i = 0; i < els.length; i += 1) {
if (els[i].checked) {
isValid = true;
}
}
return isValid;
}
</script>
You are setting isValid
to true if any checkbox is checked, what you should do is return false if any checkbox is not checked. 如果选中任何复选框,则将
isValid
设置为true;如果未选中任何复选框,则应该返回false。
function validateForm() {
var form = this,
els = form.elements['lanjut[]'], i;
for (i = 0; i < els.length; i += 1) {
if (!els[i].checked) {
return false;
}
}
return true;
}
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