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VisualizaçõesHow to solve this numbering issue due to overlap?
The working Codepen demo here. When you click on the grid, it will draw lines with numbered red dots. The problem I am facing now is : lets say if you click on the grid to give a 1,2,3 line as shown above and because you want to create a line with dot number 5, you have to click back on the 2 again. So, a number gets skipped because it labels it as 1,2,3,5 and there is no 4. I tried to actually amend the code at Line 160 because it is responsible for the addition of the numbering. Any help will be appreciated .
var elements = document.getElementsByClassName('red-dot');
var eLength = elements.length;
kk=0;
dValue = eLength+1;
Thank you for reading and have a nice day :)
2 Respostas
Responde à pergunta0
You have to introduce a new global variable numberOfDots. Initialize it to zero. Increase its value only when a dot is drawn on a grid position that is not already taken, i.e. inside the if (!isTaken) block. Then, instead of dValue = eLength+1, you can do dValue = numberOfDots+1.
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The problem resides in create_dot. When you compute the next number, you take in consideration all red dots, even those you have hidden :
//line 157
var elements = document.getElementsByClassName('red-dot');
var eLength = elements.length;
kk=0;
dValue = eLength+1;
What I would do is this (avoiding global variables) :
When you set the background to transparent, add a class hidden the adapt your selector :
//line 172
if (!isTaken) {
newDot.dataset['dvalue'] = dValue;
newDot.innerHTML = newDot.dataset.dvalue;
} else {
newDot.style.backgroundColor = 'transparent';
newDot.classList.add('hidden');
}
Then :
//line 157
var elements = document.querySelectorAll('.red-dot:not(.hidden)');
var eLength = elements.length;
kk=0;
dValue = eLength+1;
This way, you will only count visible red dots. THis technique can be adapted to fit your needs, you can either filter the elements and check their background-color property too if you prefer. The error is only in the fact that you don't display some red-dots, but you count them anyway and that lead your function to skip numbers.