Question

我需要要求确认在表单中留下两个字段为空格式的javascript ..这里有例子
Teory
Field1：空白; Field2：空白; Field3：空白;
如果field1在empy中则返回false;要求确认其他2，例如“你确定要离开场地＃..空白吗？” ＆GT;如果按下确定，请检查字段3否则返回假

码

var field1 = document.form.field1.value;
var field2 = document.form.field2.value;
var field3 = document.form.field3.value;

if ((field1 == "") || (field1 == "undefined")) {
       alert("Cannot leave field1 blank");
       document.form.field1.focus();
       return false;
    }


     else if ((field2 == "") || (field2 == "undefined")) {      
     var x = confirm("Are U sure to leave field2 blank?");
  if (x)
      return true;
  else
    return false;
    }   


var y = confirm("Are U sure to leave field3 blank?");
  if (y)
      return true;
  else
    return false;
    }   

        else {
       document.form.submit();
    }

当然它不起作用......任何想法？感谢

Answer 1

我很快就改写了你的js。我希望它会帮助你。

var form = document.getElementById("myform");
var field1 = form.field1;
var field2 = form.field2;
var field3 = form.field3;

if (form.attachEvent) {
    form.attachEvent("submit", formValidation);
} else {
    form.addEventListener("submit", formValidation);
}

function formValidation(e) {
    if (e.preventDefault) e.preventDefault();

    if ((field1.value == "") || (field1.value == "undefined")) {
        alert("Cannot leave field1 blank");
        field1.focus();
        return false;
    }


    else if ((field2.value == "") || (field2.value == "undefined")) {      
        var x = confirm("Are U sure to leave field2 blank?");
        if (!x) {
            field2.focus();
            return false;
        }
    }   

    else if ((field3.value == "") || (field3.value == "undefined")) {
        var y = confirm("Are U sure to leave field3 blank?");
        if (!y){
            field3.focus();
            return false;
        }
    }

    else {
        console.log("sending");
        form.submit();
    }
};

<form action="" id="myform" method="POST">
    <input type="text" id="field1" name="field1">
    <input type="text" id="field2" name="field2">
    <input type="text" id="field3" name="field3">
    <input type="submit" value="send">
</form>

Answer 2

最后我感谢昨天的建议（我再也看不到消息了？！）..
如果有人需要，适用于我的解决方案如下：

$ret = false
if ((field2 == "") || (field2 == "undefined")) {  
   var x = confirm("Are U sure to leave field2 blank?");
if (x) {
  $ret = true;
}
}   

if ((field3== "") || (field3== "undefined")) {      
if (confirm("Are U sure to leave field3 blank?")){
  $retu = true;
}   
}

if ( ($ret == true) && ($retu == true) ) {
document.form.submit();
    }

感谢所有帮助寻找解决方案的人！

Javascript确认验证表单

2 个答案: