js实现自定义修改网页中表格信息

项目中的打印页面,为提高用户体验,需要增自定修改表格内容的功能,以下是使用示意图(双击td标签部分的内容,可自定义修改):

 

以下是js插件源码,存为edit.js文件:

 1 var tbl, tbt;
 2 
 3 var body = document.getElementsByTagName('body');
 4 
 5 var tb = document.getElementsByTagName("table");
 6 tbl = tb[0].offsetLeft;
 7 tbt = tb[0].offsetTop;
 8 
 9 var list = httpCollectionToArray(document.getElementsByTagName("td"));
10 
11 list.forEach(function (value) {
12     value.addEventListener('dblclick', function () {
13         blurEdit();
14         var left = tbl + value.offsetLeft - 5;
15         var top = tbt + value.offsetTop - 5;
16         var width = value.offsetWidth + 10;
17         var height = value.offsetHeight + 10;
18         var div = document.createElement('div');
19         div.style.cssText = "position:absolute;width:" + width + "px;height:" + height + "px;border:2px solid #000;top:" + top + ";left:" + left + ";";
20         var textarea = document.createElement('textarea');
21         textarea.setAttribute("class", "editTextarea");
22         textarea.style.cssText = "width:" + width + "px;height:" + height + "px;resize:none;";
23 
24         var text = document.createTextNode(value.innerText);
25         textarea.appendChild(text);
26         div.appendChild(textarea);
27 
28         textarea.addEventListener('blur', function () {
29             var text = document.getElementsByClassName('editTextarea')[0].value;
30        // 转换文本中的回车符和空格符
31             text = text.replace(/\n/g, "<br/>");
32             text = text.replace(/\s/g, "&nbsp;");
33             value.innerHTML = text;
34             body[0].removeChild(div);
35         });
36 
37         body[0].appendChild(div);
38         document.getElementsByClassName('editTextarea')[0].focus();
39     });
40 });
41 
42 function blurEdit() {
43     var focus = httpCollectionToArray(document.getElementsByClassName('editTextarea'));
44     focus.forEach(function (value) {
45         value.blur();
46     });
47 }
48 
49 function httpCollectionToArray(collections) {
50     var array = [];
51     for (var i = 0; i < collections.length; i++) {
52         array[i] = collections[i];
53     }
54     return array;
55 }

 使用方法:在对应的前端页面引入edit.js文件,如下:

1 <script src="<c:url value="/staticmedia/scripts/edit.js"/>"

 

posted @ 2019-04-18 09:55  anderson_1996  阅读(1393)  评论(0编辑  收藏  举报