如何防止按钮提交表单

问题：

In the following page, with Firefox the remove button submits the form, but the add button doesn't. 在下一页中，使用Firefox，“删除”按钮提交表单，但“添加”按钮不提交。 How do I prevent the remove button from submitting the form? 如何防止“删除”按钮提交表单？

<html>
<head>
<script type="text/javascript" src="jquery-1.3.2.min.js"></script>
<script type="text/javascript">
function addItem() {
  var v = $('form :hidden:last').attr('name');
  var n = /(.*)input/.exec(v);
  var newPrefix;
  if ( n[1].length == 0 ) {
    newPrefix = '1';
  } else {
    newPrefix = parseInt(n[1])+1;
  }
  var oldElem = $('form tr:last');
  var newElem = oldElem.clone(true);
  var lastHidden = $('form :hidden:last');
  lastHidden.val(newPrefix);
  var pat = '=\"'+n[1]+'input';
  newElem.html(newElem.html().replace(new RegExp(pat, 'g'), '=\"'+newPrefix+'input'));
  newElem.appendTo('table');
  $('form :hidden:last').val('');
}
function removeItem() {
  var rows = $('form tr');
  if ( rows.length > 2 ) {
    rows[rows.length-1].html('');
    $('form :hidden:last').val('');
  } else {
    alert('Cannot remove any more rows');
  }
}
</script>
</head>
<body>
<form autocomplete="off" method="post" action="">
<p>Title:<input type="text" /></p>
<button onclick="addItem(); return false;">Add Item</button>
<button onclick="removeItem(); return false;">Remove Last Item</button>
<table>
<th>Name</th>

<tr>
  <td><input type="text" id="input1" name="input1" /></td>
  <td><input type="hidden" id="input2" name="input2" /></td>
</tr>
</table>
<input id="submit" type="submit" name="submit" value="Submit">
</form>
</body>
</html>

解决方案：

参考一： https://stackoom.com/question/3ucn/如何防止按钮提交表单
参考二： https://oldbug.net/q/3ucn/How-to-prevent-buttons-from-submitting-forms

来源：oschina

链接：https://my.oschina.net/u/4438370/blog/4321220

标签

javascript

firefox

autocomplete

jquery