javascript - 如何使用 javascript 设置 eWay 值属性

Question

我有这个代码:

<script src="https://secure.ewaypayments.com/scripts/eCrypt.js"
   class="eway-paynow-button"
   data-publicapikey=""
   data-amount="1000"
   data-currency="AUD" >
</script>

如何通过 Javascript 函数设置数据量？

Answer 1

你可以试试看

(假设您只对脚本元素设置了 eway-paynow-button 类)

document.getElementsByClassName("eway-paynow-button")[0].dataset.amount = 1000;

或者更通用的解决方案

var elems = document.getElementsByClassName("eway-paynow-button");
for (var i = 0; i < elems.length; i++) {
   if(elems[i].getAttribute('src') === "https://secure.ewaypayments.com/scripts/eCrypt.js") {
      elems[i].dataset.amount = 1000;
   }
}