Question

我正在尝试验证表单中的文本框，但是当单击提交按钮并且所有框都为空时，所有代码都会继续运行，就像所有代码都已正确填写一样，即使它不是。这是我用来验证文本框的代码

function validateAndEmail(){        
    if(document.channelForm.chanName.value == “”) {
        alert(“Please provide your channel name.”);
        Return false;
    }
    else if(document.channelForm.chanURL.value == “”) {
        alert(“Please provide your channel URL.”);
        Return false;
    }
    else if(document.channelForm.famName.value == “”) {
        alert(“Please provide your Family name.”);
        Return false;
    }
    else if(document.channelForm.firName.value == “”) {
        alert(“Please provide your First name.”);
        Return false;
    }
    else if(document.channelForm.email.value == “”) {
        alert(“Please provide your valid Email.”);
        Return false;
    }
    else if(document.channelForm.address.value == “”) {
        alert(“Please provide your Address.”);
        Return false;
    }
    else {
        alert("Everything is ok. Dont panic!") 
        Return true;
    }   
}

我已经使用提示“工作”的警告测试了此按钮，因此它肯定与代码相关联，但是当我尝试使用if语句时，即使满足条件，它也不会运行语句。任何有经验的研究员都能给予我的帮助将不胜感激。

Answer 1

用＆＃34;。
将Return替换为return ，不带大写。
~~更改文本编辑器。~~

有效功能：

＆＃13;

function validateAndEmail() {
    var form = document.channelForm;
  console.log(form);
    if (form.chanName.value == "") {
        document.write("Please provide your channel name.");
        return false;
    } else if (form.chanURL.value == "") {
        document.write("Please provide your channel URL.");
        return false;
    } else if (form.famName.value == "") {
        document.write("Please provide your Family name.");
        return false;
    } else if (form.firName.value == "") {
        document.write("Please provide your First name.");
        return false;
    } else if (form.email.value == "") {
        document.write("Please provide your valid Email.");
        return false;
    } else if (form.address.value == "") {
        document.write("Please provide your Address.");
        return false;
    } else {
        document.write("Everything is ok. Dont panic!")
        return true;
    }
}

＆＃13;

<form name="channelForm" onsubmit="validateAndEmail()">
  <input name="chanName"><br>
  <input name="chanURL"><br>
  <input name="famName"><br>
  <input name="firName"><br>
  <input name="email"><br>
  <input name="address"><br>
  
  
  <input type="submit" value="Ok" />
  
  
</form>

＆＃13;

HTML / Javascript代码不会验证表单

1 个答案: