JavaScript symbol.description 属性

javascriptweb developmentfront end technologyobject oriented programming更新于 2024/8/30 10:20:17

JavaScript 中的 symbol.description 属性将 Symbol 对象转换为原始值。语法如下 −

Symbol()[Symbol.toPrimitive](hint);

示例

<!DOCTYPE html>
<html>
<body>
<h2>Demo Heading</h2>
<p>Click to display...</p>
<button onclick="display()">Result</button>
<p id="test"></p>
<script>
   function display() {
      const val = Symbol('john');
      console.log(val[Symbol.toPrimitive]);
   }
</script>
</body>
</html>

输出

点击“结果”按钮 −

示例

<!DOCTYPE html>
<html>
<body>
<h2>Demo Heading</h2>
<p>Click to display...</p>
<button onclick="display()">Result</button>
<p id="test"></p>
<script>
   function display() {
      const val = Symbol(2465);
      var res = val[Symbol.toPrimitive](99);
      console.log(res)
   }
</script>
</body>
</html>