在2008年的最后一天,在此祝愿大家元旦快乐!!!
郑重声明:此问题根本不是问题,现在看来就是本人知识匮乏,庸人自扰,望广大朋友勿喷!!
细心发现问题,耐心解决问题,信心面对问题.
作者:白某人
长话短说:”服务员,上代码....”
测试代码:
以下是在IE下的测试.我所期望的结果是(旁白:我已经开始犯错了):
<div id="div88">this is div88</div>
<div id="div2">this is div2</div>
<div id="div3">this is div3</div>
实际结果:
<div id="div88">this is div88</div>
问题:
Div2,div3 丢了?
发现问题怎么办?看代码.
Template.js line:197 (Extjs ver 2.2)
append : function(el, values, returnElement){
return this.doInsert('beforeEnd', el, values, returnElement);
}
在看 line201:
doInsert : function(where, el, values, returnEl){
el = Ext.getDom(el);
var newNode = Ext.DomHelper.insertHtml(where, el, this.applyTemplate(values));
return returnEl ? Ext.get(newNode, true) : newNode;
}
在在看:DomHelper.js line:267
insertHtml : function(where, el, html){
where = where.toLowerCase();
if(el.insertAdjacentHTML){
if(tableRe.test(el.tagName)){
var rs;
if(rs = insertIntoTable(el.tagName.toLowerCase(), where, el, html)){
return rs;
}
}
switch(where){
case "beforebegin":
el.insertAdjacentHTML('BeforeBegin', html);
return el.previousSibling;
case "afterbegin":
el.insertAdjacentHTML('AfterBegin', html);
return el.firstChild;
case "beforeend":
el.insertAdjacentHTML('BeforeEnd', html);
return el.lastChild;
case "afterend":
el.insertAdjacentHTML('AfterEnd', html);
return el.nextSibling;
}
throw 'Illegal insertion point -> "' + where + '"';
}
//////后面省略
}
原来还是用的insertAdjacentHTML方法,为什么会有问题呢?
输出中间代码:
var tpl = new Ext.Template('<div id="div{id}">this is div{id}</div>');
tpl.append('div1',{id:'2'});
tpl.insertAfter('div2',{id:'3'});
$("result-area").innerText = Ext.getDom("div1").innerHTML;
//.........
结果如下:
this is div1
<DIV id=div2>this is div2</DIV>
<DIV id=div3>this is div3</DIV>
?????? 为什么会这样? “this is div1”两边的<div>标签呢?
在测试:
var tpl = new Ext.Template('<div id="div{id}">this is div{id}</div>');
tpl.append('div1',{id:'2'});
tpl.insertAfter('div2',{id:'3'});
$("result-area").innerText = Ext.getDom("div1").outerHTML;
//.........
结果如下:
<DIV id=div1>
this is div1
<DIV id=div2>this is div2</DIV>
<DIV id=div3>this is div3</DIV>
</DIV>
(旁白:本来到这就已经能发现问题所在了,但执迷不悟,继续犯错)
原来它把div2,div3插到div1的value/text 后边了.所以运行tpl.overwrite('div1',{id:'88'});后div2,div3没了.
在此附上tpl.overwrite源码(innerHTML直接赋值):
overwrite : function(el, values, returnElement){
el = Ext.getDom(el);
el.innerHTML = this.applyTemplate(values);
return returnElement ? Ext.get(el.firstChild, true) : el.firstChild;
}
问题知道了,可怎么办呢,改Ext源码?
