JavaScript Symbol.search屬性用法及代碼示例

[Symbol.search](string)

<script>
//JavaScript to illustrate Symbol.search
class S {  
constructor(value) 
{
    this.value = value;
  }
  [Symbol.search](string) {
return string.indexOf(this.value);
  }
}
document.write('JavaTpoint'.search(new S('int')));
//expected output:7
</script>

7

<script>
//JavaScript to illustrate Symbol.search
class S {  
constructor(value) 
{
    this.value = value;
  }
  [Symbol.search](string) {
return string.indexOf(this.value);
  }
}
document.write('Symbol'.search(new S('ol')));
//expected output:4
</script>

4