make sure that element exists before changing its style

This commit is contained in:
David Remer 2020-04-30 15:44:15 +03:00
parent 23dd407fc8
commit bc59efeb3c
3 changed files with 14 additions and 4 deletions

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View file

@ -23,11 +23,21 @@ class Renderer {
}
hideButtons(element) {
document.querySelector(element).style.display = 'none';
const domElement = document.querySelector(element);
if (! domElement ) {
return false;
}
domElement.style.display = 'none';
return true;
}
showButtons(element) {
document.querySelector(element).style.display = 'block';
const domElement = document.querySelector(element);
if (! domElement ) {
return false;
}
domElement.style.display = 'block';
return true;
}
}