Linked Dynamic Radio Buttons HTML Javascript

问题

All,

Have used this site a few times before and had some great replies so hopefully someone can help again. I want a set of radio buttons, so that when you click a button - you get another set below it. Then again, when you click one of the 2nd set of buttons, you'll get a third etc. Currently I have the following:

<html>
<head>
<title>My Wizard</title>

    <script language="javascript">

    function Display(question) {
            h1=document.getElementById("yes");
            h2=document.getElementById("no");
            h3=document.getElementById("dk");
            h4=document.getElementById("yes2");

                if (question=="yes") h1.style.display="block";
                    else h1.style.display="none";
                if (question=="no") h2.style.display="block";
                    else h2.style.display="none";
                if (question=="dk") h3.style.display="block";
                    else h3.style.display="none";
                if (question=="yes2") h4.style.display="block";
                    else h4.style.display="none";
                                }
    </script>


</head>

<body>

    <hr>
        <form name="form1">
        <p>Do you like the colour blue?</p>

            <input type="radio" name="type" value="yes" checked
            onClick="Display('yes');">
            Yes

            <input type="radio" name="type" value="no"
            onClick="Display('no');">
            No

            <input type="radio" name="type" value="dk"
            onClick="Display('dk');">
            Don't know

<br>

<div ID="yes" style="display:none;">

    <hr>
        <p>Do you like the colour red?</p>

            <input type="radio" name="type" value="yes2" checked
            onClick="Display('yes2')">
            Yes

            <input type="radio" name="type" value="no2"
            onClick="Display('no2');">
            No

</div>

<div ID="yes2" style="display:none">
I want this to appear beneath the 2nd set of buttons, not replacing it!
</div>

<div ID="no2" style="display:none">
test2
</div>


<div ID="no" style="display:none">
<b>this is my no box:</b>
<input type="text" name="no" size="25">
</div>

<div ID="dk" style="display:none">
<b>dk:</b>
<input type="text" name="dk" size="15">
</div>

</form>
</body>
</html>

So basically, i'm trying to make a little wizard - so something that will ask the user a question, and based on this - it will ask them another. I dont want to use server side applications so am trying something simple like this - but whenever the user selects an option from the 2nd set of buttons, the text which goes with it replaces the 2nd set of buttons. What am i doing wrong?

Please select 'yes' and 'yes' again to see what i mean. Any help will be appreciated!

Joe

回答1:

Your if statement is wrong. You ask again and again this: if (question=="yes") h1.style.display="block"; else h1.style.display="none"; and the second time if is not true, so you set the h1 to be hidden.

here is one solution:

<html>
<head>
<title>My Wizard</title>

<script language="javascript">

function Display(question, i) {
        h1=document.getElementById("yes");
        h2=document.getElementById("no");
        h3=document.getElementById("dk");
        h4=document.getElementById("yes2");

        if(i==1){
            if (question=="yes") h1.style.display="block";
                else h1.style.display="none";
            if (question=="no") h2.style.display="block";
                else h2.style.display="none";
        }else if(i==2){
            if (question=="dk") h3.style.display="block";
                else h3.style.display="none";
            if (question=="yes2") h4.style.display="block";
                else h4.style.display="none";
        }
}
</script>


</head>

<body>

    <hr>
    <form name="form1">
    <p>Do you like the colour blue?</p>

        <input type="radio" name="type" value="yes" checked
        onClick="Display('yes', 1);">
        Yes

        <input type="radio" name="type" value="no"
        onClick="Display('no', 1);">
        No

        <input type="radio" name="type" value="dk"
        onClick="Display('dk', 1);">
        Don't know

<br>

<div ID="yes" style="display:none;">

<hr>
    <p>Do you like the colour red?</p>

        <input type="radio" name="type" value="yes2" checked
        onClick="Display('yes2', 2)">
        Yes

        <input type="radio" name="type" value="no2"
        onClick="Display('no2', 2);">
        No

</div>

<div ID="yes2" style="display:none">
I want this to appear beneath the 2nd set of buttons, not replacing it!
</div>

<div ID="no2" style="display:none">
test2
</div>


<div ID="no" style="display:none">
<b>this is my no box:</b>
<input type="text" name="no" size="25">
</div>

<div ID="dk" style="display:none">
<b>dk:</b>
<input type="text" name="dk" size="15">
</div>

</form>
</body>
</html>

回答2:

Radio input elements are grouped by their name attribute. You should assign a different name to the other sets of radio input elements.

Visual example:

[x] name=favColor   [ ] name=favRed
[ ] name=favColor   [x] name=favRed
[ ] name=favColor   [ ] name-favRed

See also: https://developer.mozilla.org/en/HTML/Element/input

来源：https://stackoverflow.com/questions/7640384/linked-dynamic-radio-buttons-html-javascript

标签

javascript

button

dhtml

radio