creating a for-loop using Javascript?

Question

I have a problem creating a for-loop using Javascript. It seems everyting is fine for me but still I didn't get what I want.

Take a look please to this code to understand more:

The HTML form code:

<form name="myform">
    <textarea name="inputtext" cols="100%" rows="10%"></textarea><br />
    <input type="radio" name="options" value="javascript" checked> Option1 <br />
    <input type="radio" name="options" value="windows"> Option2<br />
    <input type="button" value="Do it" onClick="generate();"><br />
    <textarea name="outputtext" cols="100%" rows="10%"></textarea><br />
</form>

The Javascript code:

function generate() {
var code = ""+document.myform.inputtext.value;
if (document.myform.options[0].checked) {
    document.myform.outputtext.value = escape(code);
}
else {
    var result= "2- ";
    for(int i=0; i<code.length; i++) {
    //There will be some logic to decide if to add the char or not.
    result+=code.charAt(i);
    }
    document.myform.outputtext.value = result;
}
}

The problem is not clear for me. However, when I try to comment out the for-loop, everything works fine !

Any ideas?

int is not a datatype in javascript. Please use a javascript debugger (like firebug on firefox) to help you out. — Munim
– Munim, Commented May 15, 2011 at 19:26

Guffa · Accepted Answer · 2011-05-15 19:25:27Z

8

There is no int data type in Javascript (or any data types at all used to declare variables).

for(var i=0; i<code.length; i++) {

answered May 15, 2011 at 19:25

Guffa

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2 Comments

iTurki Over a year ago

OMG! How I miss that ! Sometimes you mix between Java and Javascript. Thanks @Guffa :)

Guffa Over a year ago

@2rk: I have the same problem jumping between C# and Javascript. I have done the exact same error several times. :)

Aaron · Accepted Answer · 2011-05-15 19:33:27Z

0

There is also an Object-oriented solution to this.

var generate = {
   loop: function() {
        var code = ""+document.myform.inputtext.value;

        if (document.myform.options[0].checked) {
            document.myform.outputtext.value = escape(code);
        }
        else {
            var result= "2- ";
            //CHANGE THE INT(I assume Java) DATATYPE TO A LOCAL VARIABLE USING THE var KEYWORD TO KEEP THE SCOPE IN THE FOR LOOP
            //RECURSION CAN BE QUICKER
            for(var i=0; i<code.length; i++) {
            //There will be some logic to decide if to add the char or not.
            result+=code.charAt(i);
        }
        document.myform.outputtext.value = result;
     }
 }

generate.loop();

answered May 15, 2011 at 19:33

Aaron

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1 Comment

Guffa Over a year ago

You forgot the closing bracket for the loop.

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