Problem with Javascript.

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Lawrence_Fields

var button = false;
var B = "<button type='button' script = 'var button = true'>Calculate!</button>" ;
var n = 0;
var y = new Array();
var x = /([1-10])\/10/g ;
var tds = document.getElementsByTagName("td");
var titles = document.getElementsByTagName("h2");

for(var j = 0; j < titles.length; j++) {
var title = titles[j];
	title.innerHTML = title.appendChild(B); //Problem is right here.
}

if (button = true){
for(var i = 0; i< tds.length; i++) {
 var td= tds[i];
	if(td.innerHTML == x) 
	{
		x = y[i];
	}
	for(var z = 0; z < i; z++) 
	{
	n = n + y[z];
	}

window.open(document.write("<p>" + n + "</p>"));			
}

}

button = false;

The problem is where the comment specifies it to be. For some reason Greasemonkey won't let me run it.

Charles

I don't think that Greasemonkey understands HTMLELement.innerHTML and you need to use the DOM.

Lawrence_Fields

New Code

var button = false;
var B = document.createElement("button");
var n = 0;
var y = new Array();
var x = /([1-10])\/10/g ;
var tds = document.getElementsByTagName("td");
var title = document.getElementsByTagName("h2")[0];

B.setAttribute('type', 'button');
B.setAttribute('value', 'var button = true');
B.setAttribute('onclick', 'var button= true')
title.appendChild(B);

if (button = true){
for(var i = 0; i< tds.length; i++) {
 var td= tds[i];
	if(td.innerHTML == x) 
	{
		x = y[i];
	}
	for(var z = 0; z < i; z++) 
	{
	n = n + y[z];
	}

window.open(document.write("<p>" + n + "</p>"));	//Security Error		
}

}

button = false;

Error Console is telling me this is a security error. What can be done to fix this?

Charles

I think that you want:

window.open ('', 'win').document.write ('<p>', n, '<p>');

[i]// or if you're not into the whole brevity thing:[/i]

win = window.open ('', 'win');
win.document.write ('<p>', n, '<p>');

Lawrence_Fields

Well, that got the window to show up. However it's still telling me it's a security error. :/

Charles

I had a "cut and paste" error up there. Give it another go and if it still isn't working post what you then have.

Lawrence_Fields

I got to leave for work soon so I'll just post what I have so far.

var button = false;
var B = document.createElement("button");
var n = 0;
var y = new Array();
var x = /([1-10])\/10/g ;
var tds = document.getElementsByTagName("td");
var title = document.getElementsByTagName("h2")[0];

B.setAttribute('type', 'button');
B.setAttribute('value', 'Calculate!');
B.setAttribute('onclick', 'button= true');
//t = B.firstChild.document.createElement("p");
//t.nodeValue = "Calculate!" 
title.appendChild(B);

if (button = true){
for(var i = 0; i< tds.length; i++) {
 var td= tds[i];
	if(td.innerHTML == x) 
	{
		parseFloat('x');
		x = y[i];
	}
	for(var z = 0; z < i; z++) 
	{
	n = n + y[z];
	}


}
window.open('', 'win', height = 300, width = 300).document.write('<p>' + (n/z) + '</p>');	//Security Error.								
}

button = false;

Charles

Try

window.open('', 'win', 'height=300,width=300').document.write('<p>', (n/z), '</p>');

Lawrence_Fields

I'm STILL getting the security error for some unknown reason. :/

Lawrence_Fields

Well, whatever. Everything else works, syntax wise. However I still have one nagging problem. I wanted this program to cycle through <td> elements and scoop up everything in a "n/10" format and calculate the average mean. For some reason it's not displaying the result. I'll post what I have so far.

var button = false;
var B = document.createElement("input");
var n = 0;
var y = new Array();
var x = /([0-9]{2})\/10/g ;
var c = 0;
var tds = document.getElementsByTagName("td");
var title = document.getElementsByTagName("h2")[0];


B.setAttribute('type', 'button');
B.setAttribute('value', 'Calculate!');
B.setAttribute('onclick', 'button= true');
title.appendChild(B);

if (button = true){
for(var i = 0; i< tds.length; i++) {
 var td= tds[i];
	if(td.innerHTML == x) 
	{
		parseFloat('x');
		if(x.NaN = true){
		i++;
		c++;
		}
		if(x < 1){
		i++;
		c++;
		}
		if(x > 10){
		i++;
		c++;
		}
		x = y[i];
		n = n + y[i];
	}
	//for(var z = 0; z < i; z++) 
	//{
	//n = n + y[z];
	//}


}
window.open('', 'win', 'height=300,width=300').document.write('<p>', (n/(i-c)), '</p>');								
}

button = false;