javascript - OnSubmit 字段中的 Html 表单 If 语句

Question

我对 html/php/js 相当陌生，在有条件提交表单时遇到了问题。基本上，我想做的是让它在确认('你想提交此表单吗？')函数仅在每个字段都输入了值(checkform()函数)时才显示。如果两者都为真，则该表单将提交。任何帮助将不胜感激，谢谢!

<script type="text/javascript">
function checkform()
{
	var myForm=document.frmhot;
	
	if(myForm.status.value==""){
		alert("Please select a timeframe status.");	
		return false;
		myForm.status.focus();
	}
    if (myForm.line.value==""){
		alert("Please select a line.");
		return false;
	}
	if(myForm.reason.value==""){
		alert("Please select a reason code.");
		return false;
	}
	if(myForm.partnum.value==""){
		alert("Please enter a part number.");
		return false;
	}
	if(myForm.badgescan.value==""){
		alert("Please enter a badge number.");
		return false;
	}
	return true;
		
}	
</script>

<form method="post" action="newhotpartgenerate.php" name="frmhot" 
onclick="if(checkform();){
	confirm('Do you want to submit the form?');
}
>
         
<input class="button_text" type="submit"  value="Submit" name="submit" onclick= "checkform();"  />
</form>

Answer 1

完整的工作解决方案，并在一定程度上对 IE 兼容性进行了修正和调整。

<script>
    function checkform(evt)    {        
        var myForm = document.frmhot;
        var condition = true;
        if(myForm.status.value==""){
            alert("Please select a timeframe status."); 
            myForm.status.focus();
            condition = false;
        }
        if (myForm.line.value==""){
            alert("Please select a line.");
            condition = false;
        }
        if(myForm.reason.value==""){
            alert("Please select a reason code.");
            condition = false;
        }
        if(myForm.partnum.value==""){
            alert("Please enter a part number.");
            condition = false;
        }
        if(myForm.badgescan.value==""){
            alert("Please enter a badge number.");
            condition = false;
        }
        if(condition){ condition =  confirm('Do you want to submit the form?'); }

        if(!condition) {
            if(evt.preventDefault) { event.preventDefault(); }    
            else if(evt.returnValue) { evt.returnValue = false; }    
            else { return false; }
        }
    }
</script>
<form method="post" action="newhotpartgenerate.php" name="frmhot" onsubmit="checkform(event)">
    <input type="text" name="status"/>         
    <input type="text" name="line"/>
    <input type="text" name="reason"/>
    <input type="text" name="partnum"/>
    <input type="text" name="badgescan"/>
    <input class="button_text" type="submit" value="Submit"/>
 </form>