javascript - Calling a function without clicking anything - Stack Overflow

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I'm new in programming and I'm trying to call a function without any button or click event. I'm doing a table within a table using javascript function. Here's my code so far:

<html>
<head> <title> Hello </title> </head>
<body>
<table border=1>
    <tr>
        <td> Hello! <input type='hidden' value='0' id='theValue' /> <script> add(); </script> <div id='myDiv'> </div> </td>
    </tr>

<script>
$ctra = 1;
$ctr1a = 1;  
function add() { 
    var ni = document.getElementById('myDiv');
    var numi = document.getElementById('theValue');
    var num = (document.getElementById('theValue').value -1)+ 2;
    numi.value = num;
    var newdiv = document.createElement('div');
    var divIdName = 'my'+num+'Div';
    newdiv.setAttribute('id',divIdName);
    newdiv.innerHTML = "<table border=1>"+
                        "<tr>"+
                        "<td> Hello! <input type='hidden' value='0' id='theValue' /> <script> add(); </script> <div id=('" + divIdName + "')> </div> </td>"+
                        "</tr>"+
                        "</table>";
    if($ctra<100){
        ni.appendChild(newdiv);
        $ctra++;
    }
}
</script>

</table>
</body>
</html>

When I run it, it displays

"+ ""+ "
Hello!
"; if($ctra<100){ ni.appendChild(newdiv); $ctra++; } }

in the browser. What could the problem be? Thank you in advance!

EDIT

function add() { 
    var ni = document.getElementById('myDiv');
    var numi = document.getElementById('theValue');
    var num = (document.getElementById('theValue').value -1)+ 2;
    numi.value = num;
    var newdiv = document.createElement('div');
    var divIdName = 'my'+num+'Div';
    newdiv.setAttribute('id',divIdName);
    newdiv.innerHTML = "<table border=1><tr><td> Hello! <input type='hidden' value=0 id='theValue' /><div id='" + divIdName + "'></td></tr></table>";
    ni.appendChild(newdiv);
    for(var i=1;i<100;i++) {
        var ni = document.getElementById(divIdName);
        var numi = document.getElementById('theValue');
        var num = (document.getElementById('theValue').value -1)+ 2;
        numi.value = num;
        var newdiv = document.createElement('div');
        var divIdName = 'my'+num+'Div';
        newdiv.setAttribute('id',divIdName);
        newdiv.innerHTML = "<table border=1><tr><td> Hello! <input type='hidden' value='" + i + "' id='theValue' /><div id='" + divIdName + "'></td></tr></table>";
        ni.appendChild(newdiv);
    }
}

I'm new in programming and I'm trying to call a function without any button or click event. I'm doing a table within a table using javascript function. Here's my code so far:

<html>
<head> <title> Hello </title> </head>
<body>
<table border=1>
    <tr>
        <td> Hello! <input type='hidden' value='0' id='theValue' /> <script> add(); </script> <div id='myDiv'> </div> </td>
    </tr>

<script>
$ctra = 1;
$ctr1a = 1;  
function add() { 
    var ni = document.getElementById('myDiv');
    var numi = document.getElementById('theValue');
    var num = (document.getElementById('theValue').value -1)+ 2;
    numi.value = num;
    var newdiv = document.createElement('div');
    var divIdName = 'my'+num+'Div';
    newdiv.setAttribute('id',divIdName);
    newdiv.innerHTML = "<table border=1>"+
                        "<tr>"+
                        "<td> Hello! <input type='hidden' value='0' id='theValue' /> <script> add(); </script> <div id=('" + divIdName + "')> </div> </td>"+
                        "</tr>"+
                        "</table>";
    if($ctra<100){
        ni.appendChild(newdiv);
        $ctra++;
    }
}
</script>

</table>
</body>
</html>

When I run it, it displays

"+ ""+ "
Hello!
"; if($ctra<100){ ni.appendChild(newdiv); $ctra++; } }

in the browser. What could the problem be? Thank you in advance!

EDIT

function add() { 
    var ni = document.getElementById('myDiv');
    var numi = document.getElementById('theValue');
    var num = (document.getElementById('theValue').value -1)+ 2;
    numi.value = num;
    var newdiv = document.createElement('div');
    var divIdName = 'my'+num+'Div';
    newdiv.setAttribute('id',divIdName);
    newdiv.innerHTML = "<table border=1><tr><td> Hello! <input type='hidden' value=0 id='theValue' /><div id='" + divIdName + "'></td></tr></table>";
    ni.appendChild(newdiv);
    for(var i=1;i<100;i++) {
        var ni = document.getElementById(divIdName);
        var numi = document.getElementById('theValue');
        var num = (document.getElementById('theValue').value -1)+ 2;
        numi.value = num;
        var newdiv = document.createElement('div');
        var divIdName = 'my'+num+'Div';
        newdiv.setAttribute('id',divIdName);
        newdiv.innerHTML = "<table border=1><tr><td> Hello! <input type='hidden' value='" + i + "' id='theValue' /><div id='" + divIdName + "'></td></tr></table>";
        ni.appendChild(newdiv);
    }
}

Share Improve this question edited Mar 3, 2013 at 21:46 hjpotter92 80.7k36 gold badges148 silver badges187 bronze badges asked Mar 1, 2013 at 14:09 Yngve Vahit 471 gold badge2 silver badges7 bronze badges

your script doesn't seem to be right place. write it in head section and then call your funcation – Sachin Commented Mar 1, 2013 at 14:16
@vahit. if you have got your solution then mark that as an answer – Sachin Commented Mar 1, 2013 at 14:55

Add a ment |

6 Answers 6

Sorted by: Reset to default 3

Try this

<html>
<head> <title> Hello </title> </head>
<script type="text/javascript">

    $ctra = 1;
    $ctr1a = 1;
    function add() { 
    alert('s')
    var ni = document.getElementById('myDiv');
    var numi = document.getElementById('theValue');
    var num = (document.getElementById('theValue').value -1)+ 2;
    numi.value = num;
    var newdiv = document.createElement('div');
    var divIdName = 'my'+num+'Div';
    newdiv.setAttribute('id',divIdName);
    newdiv.innerHTML = "<table border=1><tr><td> Hello! <input type='hidden' value='0' id='theValue' /></tr></table>";
    if($ctra<100){
        ni.appendChild(newdiv);
        $ctra++;
    }
}

</script>

<body onload="add()">
<table border="1">
    <tr>
        <td> Hello! <input type='hidden' value='0' id='theValue' />

        <div id='myDiv'> </div> </td>
    </tr>
</table>
</body>
</html>

Hope it works for you..:)

Your JS results in nested blocks, this isn't allowed in html. The function add() in your blocks is not defined, because when the browser encounters it, it hasn't seen your definition of add() yet. Your table contains a script that contains another table which contains yet another script. It's very confusing :P

OK, if i understand correctly: you have a single table. You'd like to have JS put another table inside. The thing you want to put inside is, in this example, a copy of the table. You want to end up with a table inside a table and you want to achieve it programatically.

First separate your concerns: scripts and html: If you put your add() after the definition and you put your script after the body then the browser will encounter it and run it. HTH:

<html>
<head> <title> Hello </title> </head>
<body>
    <table id="t1" border=1>
        <tr>
            <td> Hello! <input type='hidden' value='0' id='theValue' />
                <div id='myDiv'></div>
            </td>
        </tr>
    </table>

<script>
    function add_table() {
        var table1 = document.getElementById("t1"),
            table2 = table1.cloneNode(true),
            mydiv = document.getElementById("myDiv"),
            mydiv2;

        table2.setAttribute('id', 't2');
        mydiv2 = table2.getElementsByTagName("div")[0];
        mydiv2.setAttribute('id', 'myDiv2');
        mydiv.appendChild(table2);
    }
    // call the function
    add_table();

</script>
</body>
</html>

You have </script> inside the code. Browser interprets that as an end of javascript and breaks back to HTML. To fix this, you can divide this string into for example </sc'+'ript>. That will fix this issue, but probably you'll still have to work a bit on the script, but that's a different story.

You have to switch between differents quotes, and remove braces for the id, like this :

newdiv.innerHTML = "<table border=1>"
    +"<tr>"
    +'<td> Hello! <input type="hidden" value="0" id="theValue" /> '
    +'<script> add(); </script> <div id="' + divIdName + '"> </div> </td>'
    +"</tr>"
    +"</table>";

Because you cant access the function without any evnt in the dom..You have to call the function on any event of the elemnt.

move the script outside the table-element to the head or to the end of the body.
first add the div, then call the script. you might want to call your add() in <body onload='add'>
remove the braces here to create valid html: <div id=('" + divIdName + "')>

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javascript - Calling a function without clicking anything - Stack Overflow

6 Answers 6

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