Tampermonkey选择名称为下拉列表的值

问题描述

我希望Tampermonkey将选择下拉列表更改为特定国家/地区. HTML的格式如下；

I want Tampermonkey to change a select drop down to a specific country. The HTML is formatted like;

  <label>Country</label>
    <span class="select_wrapper">
      <select name="shipping_country_id">
        <option value="46">Afghanistan</option>
        <option value="47">Albania</option>
        <option value="42">United Kingdom</option>
        <option value="43" selected="">United States</option>
      </select>
      <span class="value">United States</span>
    </span>

我已经尝试过了

("select[name='shipping_country_id'] option[value='42']", clickNode, true);

和

 (document.querySelector && document.querySelector('select[name="shipping_country_id"]') || []).value = '42';

阅读我尝试使用该答案中使用的相同方法；

After reading Tampermonkey to select a dropdown value. It has no ID or name, just a class?I tried using the same method used in that answer;

    waitForKeyElements ("shipping_country_id:has(option[value='42'])", selectCountryDropdown);

function selectCountryDropdown (jNode) {
var evt = new Event ("click");
jNode[0].dispatchEvent (evt);

jNode.val('42');

evt = new Event ("change");
jNode[0].dispatchEvent (evt);
}

我错过了什么还是尝试了错误的事情?

Am I missing something or trying the wrong thing?

推荐答案

我通过使用与问题中最后发布的方法类似的方法来实现此目的，只是语法错误.

I got this to work by using a similar method to the last posted in the question, was just a syntax error.

waitForKeyElements ("select[name=shipping_country_id]:has(option[value=42])", selectCountryDropdown);


function selectCountryDropdown (jNode) {
var evt = new Event ("click");
jNode[0].dispatchEvent (evt);

jNode.val('42');

evt = new Event ("change");
jNode[0].dispatchEvent (evt);
}

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