jQuery实现拖动调整表格单元格大小的代码实例

前端技术 2023/09/04 JavaScript

jQuery实现的拖动调整表格td单元格的大小:

在实际应用中，可能有这样的需求，那就是需要调整td单元格的大小。
也许是为了便于观察，也许是其他原因，反正这样的需求是有的，下面就分享一段能够实现此功能的代码。

代码实例如下:

复制代码 代码如下:

<!DOCTYPE html>
<html>
<head>
<meta charset=\" utf-8\">
<title>phpstudy</title>
<style type=\"text/css\" >
table {
  border-collapse: collapse;
}
td {
  text-align: center;
}
</style>
<script src=\"http://libs.baidu.com/jquery/1.9.0/jquery.js\"></script>
<script type=\"text/javascript\">
(function ($){
  $.fn.tableresize = function () {
    var _document = $(\"body\");
    $(this).each(function () {
      if (!$.tableresize) {
        $.tableresize = {};
      }
      var _table = $(this);
      //设定ID
      var id = _table.attr(\"id\") || \"tableresize_\" + (Math.random() * 100000).toFixed(0).toString();
      var tr = _table.find(\"tr\").first(), ths = tr.children(), _firstth = ths.first();
      //设定临时变量存放对象
      var cobjs = $.tableresize[id] = {};
      cobjs._currentObj = null, cobjs._currentLeft = null;
      ths.mousemove(function (e) {
        var _this = $(this);
        var left = _this.offset().left,
            top = _this.offset().top,
            width = _this.width(),
            height = _this.height(),
            right = left + width,
            bottom = top + height,
            clientX = e.clientX,
            clientY = e.clientY;
        var leftside = !_firstth.is(_this) && Math.abs(left - clientX) <= 5,
            rightside = Math.abs(right - clientX) <= 5;
        if (cobjs._currentLeft||clientY>top&&clientY<bottom&&(leftside||rightside)){
          _document.css(\"cursor\", \"e-resize\");
          if (!cobjs._currentLeft) {
            if (leftside) {
              cobjs._currentObj = _this.prev();
            }
            else {
              cobjs._currentObj = _this;
            }
          }
        }
        else {
          cobjs._currentObj = null;
        }
      });
      ths.mouseout(function (e) {
        if (!cobjs._currentLeft) {
          cobjs._currentObj = null;
          _document.css(\"cursor\", \"auto\");
        }
      });
      _document.mousedown(function (e) {
        if (cobjs._currentObj) {
          cobjs._currentLeft = e.clientX;
        }
        else {
          cobjs._currentLeft = null;
        }
      });
      _document.mouseup(function (e) {
        if (cobjs._currentLeft) {
          cobjs._currentObj.width(cobjs._currentObj.width() + (e.clientX - cobjs._currentLeft));
        }
        cobjs._currentObj = null;
        cobjs._currentLeft = null;
        _document.css(\"cursor\", \"auto\");
      });
    });
  };
})(jQuery);
  
$(document).ready(function () {
  $(\"table\").tableresize();
});
</script>
</head>
<body>
<table cellspacing=\"0\" border=\"1\" rules=\"all\">
  <tbody>
    <tr>
      <td style=\"width:200px;\">ID</td>
      <td style=\"width:200px;\">名字</td>
      <td style=\"width:200px;\">年纪</td>
      <td style=\"width:200px;\">地址</td>
      <td style=\"width:200px;\">电话</td>
    </tr>
    <tr>
      <td>22</td>
      <td>Name:44</td>
      <td>Age:23</td>
      <td>Address:47</td>
      <td>Phone:15</td>
    </tr>
    <tr>
      <td>28</td>
      <td>Name:42</td>
      <td>Age:68</td>
      <td>Address:30</td>
      <td>Phone:50</td>
    </tr>
    <tr>
      <td>29</td>
      <td>Name:63</td>
      <td>Age:48</td>
      <td>Address:90</td>
      <td>Phone:76</td>
    </tr>
  </tbody>
</table>
</body>
</html>

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