尝试覆盖 !important 样式时遇到问题

Question

我的目标是在用户开始输入 zip 代码后显示填写电子商务结帐地址的字段。

为此，我在下面编写了这段 JS 代码

<script>


window.onload = function(){
    document.getElementById('billing_postcode').onclick = function(){
    //console.log('Hello world');
   
document.getElementById('billing_address_1_field').element.style.setProperty("display", "block", "important");

document.getElementById('billing_address_2_field').element.style.setProperty("display", "block", "important");

document.getElementById('billing_billing_number_field').element.style.setProperty("display", "block", "important");

document.getElementById('billing_city_field').element.style.setProperty("display", "block", "important");

document.getElementById('billing_state_field').element.style.setProperty("display", "block", "important");
  }
}



</script>   

这是我需要覆盖的 CSS

#billing_address_1_field {
    display: none !important;
}

#billing_address_2_field{
    display: none !important;
}

#billing_billing_number_field{
    display: none !important;
}

#billing_city_field{
    display: none !important;
}

#billing_state_field{
    display: none !important;
}

我在控制台上收到此错误

Uncaught TypeError: Cannot read property 'style' of undefined
    at HTMLInputElement.document.getElementById.onclick ((index):384)
document.getElementById.onclick @ (index):384

预先感谢您的帮助！

Answer 1

也许尝试从每个“setProperty”语句中删除“元素”。 即： document.getElementById('billing_state_field').style.setProperty("display", "block", "important");