javascript - Google ReCAPTCHA onload 回调未触发

Question

我这辈子都弄不明白我做错了什么。 loaded() 回调应该触发但没有触发。这是简化测试用例的代码(下面有一个 JS fiddle 链接):

<script>
  function loaded() {
    alert('loaded() triggered.');
  }
</script>

<script src="https://www.google.com/recaptcha/api.js?onload=loaded" async defer></script>

https://jsfiddle.net/48dshrew/

ReCaptcha Documentation

Answer 1

看起来需要将渲染模式设置为“显式”，reCaptcha 才能调用您的自定义 onload 回调函数。试试这个:

var onloadCallback = function() {
     console.log('loaded() triggered.');
}

<script src="https://www.google.com/recaptcha/api.js?onload=onloadCallback&render=explicit"
        async defer>
</script>