Question

我的表单底部有这样的代码。

 public string menuEncrypt(string[] input, MainActivity ac)
    {
        //Stream Reader to String[]
        StreamReader mc = new StreamReader(ac.Assets.Open("Menu_Code.txt"));
        StreamReader mt = new StreamReader(ac.Assets.Open("Menu_Text.txt"));

        string[] code = streamToArry(mc);
        string[] text = streamToArry(mt);


        //string[] code = File.ReadAllLines(@"JittersApp/Droid/Assets/Menu Code.txt");
        //string[] text = File.ReadAllLines(@"JittersApp/Droid/Assets/Menu Text.txt");
        int codemax = code.Length;
        int current = 0;
        int im = input.Length;
        string menu = "oder ";

        while (true)
        {
            if (current < codemax)
            {
                if (current < im)
                {
                    if (text.Contains(input[current]))
                    {
                        int num = 0;
                        while (true)
                        {
                            string item = input[current];
                            if (text[num + 1].Equals(item))
                            {
                                menu = menu + code[num + 1] + " ";
                                break;
                            }
                            else
                            {
                                num++;
                            }
                        }
                    }
                    current++;
                }
                else
                {
                    break;
                }
            }
            else
            {
                break;
            }
        }

        new AlertDialog.Builder(ac)
        .SetMessage(menu)
        .Show();
        return menu;
    }

我希望JavaScript中的侦听器能够启用提交按钮。我知道它可能是错误的，但我的JavaScript看起来有点像这样

<p>
  <input type="checkbox" id="agreed">
  I agree to keep my Username and Password confidential and uphold 
  the integrity of this pharmacy
</p>
<input type="submit" id="submit" disabled class="formbutton button-primary" value="Go">

Answer 1

您可以为输入执行此操作：

<input type='checkbox' onchange='handleChange(this);'>Checkbox

这是启用按钮：

function handleChange(checkbox) {
    if(checkbox.checked == true){
        document.getElementById("submit").removeAttribute("disabled");
    }else{
        document.getElementById("submit").setAttribute("disabled", "disabled");
   }
}

Answer 2

使用jQuery尝试下面的要求。

$('#checky').click(function(){
     
    if($(this).attr('checked') == false){
         $('#postme').attr("disabled","disabled");   
    }
    else {
        $('#postme').removeAttr('disabled');
    }
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
<input type="checkbox" checked="checked" id="checky"><a href="#">I agree to keep my Username and Password confidential and uphold 
  the integrity of this pharmacy</a>
<br>
<input type="submit" id="postme" value="submit">

使用JavaScript，请参阅This

oncheck listener for javascript中的复选框

2 个答案: