var web = new Set(['JavaScript', 'HTML', 'CSS']);
var parent = document.getElementById('test-list');
for (let i = 0; i < parent.children.length; ) {
if (web.has(parent.children[i].innerText)) { i = i + 1; }
else { parent.removeChild(parent.children[i]); }
}
JerryLu的早晨
var web = new Set(['JavaScript', 'HTML', 'CSS']); var parent = document.getElementById('test-list'); for (let i = 0; i < parent.children.length; ) { if (web.has(parent.children[i].innerText)) { i = i + 1; } else { parent.removeChild(parent.children[i]); } }