[WEB] 在线编辑器核心技术代码

 1 < iframe id = x name = x height = " 100 "  style = " padding:0px; " ></ iframe >< br >
 2 < input type = button onclick = t('UnderLine') value = " 下划线 " >
 3 < input type = button onclick = t('bold') value = " 粗体 " >
 4
 5 < input type = button onclick = t('JustifyLeft') value = " 左对齐 " >
 6 < input type = button onclick = t('JustifyCenter') value = " 居中对齐 " >
 7 < input type = button onclick = t('JustifyRight') value = " 右对齐 " >
 8
 9 < input type = button onclick = t2() value = " 增高 " >
10 < input type = button onclick = t3() value = " 减少 " >
11 < script >
12 window.frames[ " x " ].document.designMode = " On "
13 // setTimeout('window.frames["x"].document.designMode="On"',200)
14 function  t(s)
15 {
16window.frames["x"].focus();
17o=window.frames["x"].document.selection.createRange();
18window.frames["x"].document.execCommand(s);
19}
20
21 function  t2()
22 {
23  var obj=window.frames["x"].frameElement;
24  var height = parseInt(obj.offsetHeight);
25  if (height+100>=100){
26  obj.height=height+100;
27  }
28}
29 function  t3()
30 {
31  var obj=window.frames["x"].frameElement;
32  var height = parseInt(obj.offsetHeight);
33  if (height-100>=100){
34  obj.height=height-100;
35  }
36}
37 </ script >