使用jQuery粘贴后删除空格

时间:2015-09-27 16:02:24

标签: jquery

我试了一下(jsfiddle),但它没有用。

如何看到警报为空。它就像.val()函数在复制字符串之前就开始了。

$(document).on('paste', '#pasteIt', function(){
    alert($("#pasteIt").val());
    var withoutSpaces = $("#pasteIt").val();
    withoutSpaces = withoutSpaces.replace(/\s+/g, '');
    $("#pasteIt").text(withoutSpaces);
});

为什么?

3 个答案:

答案 0 :(得分:8)

获取剪贴板数据

$(document).on('paste', '#pasteIt', function(e) {
  e.preventDefault();
  // prevent copying action
  alert(e.originalEvent.clipboardData.getData('Text'));
  var withoutSpaces = e.originalEvent.clipboardData.getData('Text');
  withoutSpaces = withoutSpaces.replace(/\s+/g, '');
  $(this).val(withoutSpaces);
  // you need to use val() not text()
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<input type="text" id="pasteIt" placeholder="Paste something here">

参考:https://forum.jquery.com/topic/paste-event-get-the-value-of-the-paste#14737000004101955

答案 1 :(得分:2)

使用setTimeout,这会延迟检查,以便检索值。 请查看here

$(document).on('paste', '#pasteIt', function () {
    setTimeout(function () {
        alert($("#pasteIt").val());
        var withoutSpaces = $("#pasteIt").val();
        withoutSpaces = withoutSpaces.replace(/\s+/g, '');
        $("#pasteIt").val(withoutSpaces);
    }, 1);
});

答案 2 :(得分:0)

所以,你想要这个:

&#13;
&#13;
$(document).on('paste', '#pasteIt', function(e) {
  window.setTimeout(function() {
    var withoutSpaces = $("#pasteIt").val();
    withoutSpaces = withoutSpaces.replace(/\s+/g, '');
    $("#pasteIt").val(withoutSpaces);
  }, 1);
});
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<html>
<span>Enter: </span>
<input id="pasteIt">

</html>
&#13;
&#13;
&#13;

相关问题