勾选复选框然后提交然后弹出窗口

Question

我会很感激，如果有人能帮我找到解决一个问题，可能我需要非常简单的事情，但我不知道怎么把它放在一个，所以我需要的 - 包括勾选框的部分，然后按钮提交，但是如果你没有勾选复选框并按下按钮出现窗口，上面写着你必须做....

我做到了但我需要这个

但如果你勾选并按下按钮应该顺利出现弹出窗口只有文字信息！ 我不知道怎么做，这是带复选框和按钮的那个部分

    <form name="form" method="post" action="#" onSubmit="return checkme();">
    <input type="checkbox" name="agree" value="agree_terms" class="terms">
    &nbsp;I&acute;ve read terms and conditions and I&acute;m ready to shop
    <input type="submit" name="submit" value="" class="submit">
    </form>

这是javascript

    function checkme() {
        missinginfo = "";
        if (!document.form.agree.checked) {
            missinginfo += "You must agree to the Terms and Conditions";
        }
        if (missinginfo != "") {
            missinginfo ="" +
            "\n" +
            missinginfo + "" +
            "\n Please tick the box and try again.";
            alert(missinginfo);
            return false;
        }
        else {
            return true;
        }
    }

我尝试了不同的方式

    <body>
    <title>LIGHTBOX EXAMPLE</title>
    <style>
    .black_overlay{
    display: none;
    position: absolute;
    top: 0%;
    left: 0%;
    width: 100%;
    height: 100%;
    background-color: black;
    z-index:1001;
    -moz-opacity: 0.8;
    opacity:.80;
    filter: alpha(opacity=80);
    }
    .white_content {
    display: none;
    position: absolute;
    top: 25%;
    left: 25%;
    width: 50%;
    height: 50%;
    padding: 16px;
    border: 16px solid orange;
    background-color: white;
    z-index:1002;
    overflow: auto;
    }
    </style>
    </head>
    <body>


    <p>This is the main content. To display a lightbox click <a href = "javascript:void(0)"
    onclick = "document.getElementById('light').style.display='block';        document.getElementById('fade').style.display='block'">here</a></p>

    <div id="light" class="white_content">This is the lightbox content. <a href =                 "javascript:void(0)" onclick = "document.getElementById('light').style.display='none';                document.getElementById('fade').style.display='none'">Close</a></div>
    <div id="fade" class="black_overlay"></div>
    </body>
    </html>

但是当我勾选后面的复选框时会出现带有内容的窗口但是我需要弹出窗口才会出现在我勾选框并按下按钮之后

Answer 1

“如果您勾选并且按钮应该平滑地显示弹出窗口，只显示文本信息” - 您几乎已经完成了。 只需向第二个分支添加警报即可。 试试这段代码：

<!DOCTYPE html>
<html>
  <!-- [[[ head -->

  <head>
    <title>element</title>
<script type="text/javascript">
  function checkme() {
        if (!document.form.agree.checked) {
            missinginfo = "You must agree to the Terms and Conditions\n Please tick the box and try again.";
            alert(missinginfo);
            return false;
        }
        else {
            alert("Text information");
            return true;
        }
    }
</script>
  </head>
  <!-- ]]] -->

  <body>
    <form name="form" method="post" action="#" onSubmit="return checkme();">
      <input type="checkbox" name="agree" id="agree" value="agree_terms" class="terms">
      <label for="agree">&nbsp;I&acute;ve read terms and conditions and I&acute;m ready to shop</label>
      <input type="submit" name="submit" value="Submit" class="submit">
    </form>
  </body>
</html>