javascript - 某些 JavaScript 函数在 Chrome 浏览器上不起作用，为什么？

Question

我开发了一个 JavaScript 函数来隐藏和显示我的文本框。此功能在 Mozilla 中运行良好，但在 Chrome 浏览器中运行不佳。我不知道为什么。我的功能:

function selectType()
{   if(document.getElementById("promotype").value=="Amount")
    {   document.getElementById("typediv").style.display = "none";
        document.getElementById("type").value = 'amount';
    }
    if(document.getElementById("promotype").value=="Percentage")
    {   document.getElementById("typediv").style.display = "none";
        document.getElementById("type").value = 'percentage';
    }

    if(document.getElementById("promotype").value=="Freesignup")
    {   document.getElementById("amount").style.display = "block";
        document.getElementById("typediv").style.display = "block";
    }
    else if(document.getElementById("promotype").value=="Gift cards")
    {   document.getElementById("amount").style.display = "block";
        document.getElementById("selectmemberdiv").style.display = "block";
        document.getElementById("typediv").style.display = "block";
    }
    else
    {   if(document.getElementById("promotype").value=="Freeride")
        {   document.getElementById("amount").style.display = "none";
            document.getElementById("type").value = 'none';
            document.getElementById("typediv").style.display = "none";
        }
        else
           document.getElementById("amount").style.display = "block";    
        document.getElementById("selectmemberdiv").style.display = "none";
    }
}

首先，当我的页面加载时，我将隐藏我的“金额”文本框，之后我会根据类别单击下拉菜单以显示我的金额文本框。

但为什么它们在 Chrome 浏览器中不起作用？

Answer 1

在最后的else条件中添加括号

<script>
    function selectType()
    {
        if (document.getElementById("promotype").value == "Amount")
        {
            document.getElementById("typediv").style.display = "none";
            document.getElementById("type").value = 'amount';
        }
        if (document.getElementById("promotype").value == "Percentage")
        {
            document.getElementById("typediv").style.display = "none";
            document.getElementById("type").value = 'percentage';
        }

        if (document.getElementById("promotype").value == "Freesignup")
        {
            document.getElementById("amount").style.display = "block";
            document.getElementById("typediv").style.display = "block";
        }
        else if (document.getElementById("promotype").value == "Gift cards")
        {
            document.getElementById("amount").style.display = "block";
            document.getElementById("selectmemberdiv").style.display = "block";
            document.getElementById("typediv").style.display = "block";
        }
        else
        {
            if (document.getElementById("promotype").value == "Freeride")
            {
                document.getElementById("amount").style.display = "none";
                document.getElementById("type").value = 'none';
                document.getElementById("typediv").style.display = "none";
            }
            else
            {// this bracket
                document.getElementById("amount").style.display = "block";
                document.getElementById("selectmemberdiv").style.display = "none";
            }// end else condition
        }
    }

</script>