我需要使用有序列表文本实现文本区域。我已经完成但是只有在输入按键后>>
,行号必须递增。以下是我的努力: Js Fiddle
代码
var lineObjOffsetTop = 2;
createTextAreaWithLines('codeTextarea');
function createTextAreaWithLines(id)
{
var el = document.createElement('DIV');
var ta = document.getElementById(id);
ta.parentNode.insertBefore(el,ta);
el.appendChild(ta);
el.className='textAreaWithLines';
el.style.width = (ta.offsetWidth + 30) + 'px';
ta.style.position = 'absolute';
ta.style.left = '30px';
el.style.height = (ta.offsetHeight + 2) + 'px';
el.style.overflow='hidden';
el.style.position = 'relative';
el.style.width = (ta.offsetWidth + 30) + 'px';
var lineObj = document.createElement('DIV');
lineObj.style.position = 'absolute';
lineObj.style.top = lineObjOffsetTop + 'px';
lineObj.style.left = '0px';
lineObj.style.width = '27px';
el.insertBefore(lineObj,ta);
lineObj.style.textAlign = 'right';
lineObj.className='lineObj';
var string = '';
for(var no=1;no<200;no++){
if(string.length>0)string = string + '<br>';
string = string + no;
}
ta.onkeydown = function() { positionLineObj(lineObj,ta); };
ta.onmousedown = function() { positionLineObj(lineObj,ta); };
ta.onscroll = function() { positionLineObj(lineObj,ta); };
ta.onblur = function() { positionLineObj(lineObj,ta); };
ta.onfocus = function() { positionLineObj(lineObj,ta); };
ta.onmouseover = function() { positionLineObj(lineObj,ta); };
lineObj.innerHTML = string;
}
function positionLineObj(obj,ta)
{
obj.style.top = (ta.scrollTop * -1 + lineObjOffsetTop) + 'px';
}
答案 0 :(得分:2)
您可能希望使用contenteditable标记,而不是使用类似的文本区域。
这是一个可能看起来像的例子。
HTML:
<div class="orderedList" contenteditable="true">
</div>
JQuery的:
var yourContent = "<ol><li>Go to home.</li><li>I need to installl window 8 and sql server 2012 by tommorow so that i can work with my project well and Need to clarify.</li><li>Test application.</li></ol>";
$('.orderedList').html(yourContent);
然后你可以使用一些JQuery技巧来提交表单。
希望这有帮助!