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作业

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北卡上校

#1 Created at ... [Delete] [Delete and Lock User] 
var
  parent = document.getElementById('test-list'),
  child = parent.children;

for (var i of child) {
  var text = i.innerText;
  if ( "JavaScriptHTMLCSS".indexOf(text) === -1) {
    parent.removeChild(i);
}
}

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#2 Created at ... [Delete] [Delete and Lock User]

这个方法不完全对

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