1 回答

TA貢獻1780條經驗 獲得超1個贊
讓函數接受回調來測試導致其中斷的條件。
_computePath(aComponent, stopfun = parent => false) {
let result = '';
let parent = aComponent.parentNode;
while (parent.tagName !== 'MY-ROOT-COMPONENT') {
if (stopfun(parent)) {
result = null;
break;
}
if (parent.hasAttribute('my-attribute')) {
result = `/${parent.getAttribute('my-attribute')}${result}`;
}
parent = parent.parentNode;
}
return result;
}
let result1 = obj1._computePath(component1); // no extra stop check
let result2 = obj2._computePath(component2, parent => parent.tagName === 'SPECIAL-COMPONENT' || parent.condition === 'special');
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