JavaScriptendsWith 在 IEv10 中不起作用？

我正在尝试使用endsWith() 比较JavaScript 中的两个字符串，例如

var isValid = string1.endsWith(string2);

它在 Google Chrome 和 Mozilla 中运行良好。当涉及 IE 时，它会抛出控制台错误，如下所示

SCRIPT438: Object doesn't support property or method 'endsWith' 

我该如何解决？

Method endsWith() https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/String/endsWithIE 中不支持。查看浏览器兼容性在这里 https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith#Browser_compatibility.

您可以使用来自的polyfill选项MDN 文档 https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith#Polyfill:

if (!String.prototype.endsWith) {
  String.prototype.endsWith = function(searchString, position) {
      var subjectString = this.toString();
      if (typeof position !== 'number' || !isFinite(position) 
          || Math.floor(position) !== position || position > subjectString.length) {
        position = subjectString.length;
      }
      position -= searchString.length;
      var lastIndex = subjectString.indexOf(searchString, position);
      return lastIndex !== -1 && lastIndex === position;
  };
}