Question

下面是我的代码，用于查明角色是否是元音。但是当我运行它时，它不会打印出真或假。

有人可以帮我看看我做错了什么吗？

var vowel = function(str) {
  var matches = str.match(/[aeiou]/gi);
  var count = matches ? matches.length : 0;

  document.getElementByID('p').innerHTML = "'" + str + "contains" + count + "vowel(s)";

  return false;
}

vowel(str);

<form>
  <input type="text" name='t1'>
  <input type='submit' value="SUBMIT" onclick='return vowel(this.form.t1.v'>
  <div id="p"></div>
</form>

Answer 1

而不是args2 = "Brahman"尝试{ "this_id": "1001", "name": "Animal Testing 1", "species_type": "Cow", "breed": "Brahman", .... "herd": { "id": 1, "name": "High Production", "description": null } }, { "this_id": "1020", "name": "Animal Testing 20", "species_type": "Cow", "breed": "Brahman", .... "herd": { "id": 4, "name": "Bad Production", "description": "Bad Production" } },

Answer 2

您的代码存在一些问题。

1- getElementByID应为getElementById

2-您没有关闭函数调用vowel(this.form.t1.v

的括号

3- t1.v不是属性。您打算使用t1.value

var vowel = function(str) {
  var matches = str.match(/[aeiou]/gi);
  var count = matches ? matches.length : 0;

  document.getElementById('p').innerHTML = "'" + str + "' contains " + count + " vowel(s)";

  return false;
}

<form>
  <input type="text" name="t1" />
  <input type='submit' value="SUBMIT" onclick='return vowel(this.form.t1.value);' />
  <div id="p"></div>
</form>

如果是元音则返回true，否则返回false

2 个答案: