我在处理JS onClick事件和Dojo时遇到了一些问题。 我试图实现的是以某种方式从第一个内联单元格编辑数据。
考虑这个HTML:
<table class="datatable" id="officestable" name="officestable">
<tr>
<td>xxxxx</td>
<td>
<button id="officeeditbtn3" data-dojo-type="dijit.form.Button" type="button" data-dojo-props="iconClass:'advanEditIcon',onClick: function() { editOfficeFieldInline(this, 3); }">Edit</button>
<button id="officeconfigbtn3" data-dojo-type="dijit.form.Button" type="button" data-dojo-props="iconClass:'advanConfigIcon',onClick: function() { configOffice(this, 3); }">Config</button>
<button id="officeremovebtn3" data-dojo-type="dijit.form.Button" type="button" data-dojo-props="iconClass:'advanRemoveIcon',onClick: function() { removeOffice(this, 3); }">Remove</button>
</td>
</tr>
要处理所有这些,我在javascript中有以下(相关)方法。
function editOfficeFieldInline(buttonElem, officeid) {
var table = document.getElementById("officestable"); //get table
var operationsCell = buttonElem.domNode.parentNode; // get second cell where button are
var trline = operationsCell.parentNode; // get tr element
var dataCell = trline.firstChild; // get cell where data is to be edited
var currentContent = dataCell.innerHTML; // ... self explainable...
var tdcellHTML;
tdcellHTML = "<input id=\"editofficebox\" type=\"text\">"; // adding an input placeholder
dataCell.innerHTML = tdcellHTML; // replace cell content with edit box
// attach dijit to pre-created edit box
var editofficebox = new dijit.form.TextBox({
value: currentContent,
style: {
width: "190px",
}
},
"editofficebox");
addSaveCancelButtons(table,
operationsCell,
function(){
// 'save' actions
// save new data using ajax (working!)
saveOfficeName(officeid, dataCell, currentContent, operationsCell);
},
function(){
// 'cancel' actions
destroyOfficeFieldInline(table, false);
setCellVal(dataCell, currentContent);
}
);
}
function addSaveCancelButtons(table, operationsCell, saveAction, cancelAction) {
operationsCell.innerHTML += "<button id=\"savebutton\">Save</button>";
operationsCell.innerHTML += "<button id=\"cancelbutton\">Cancel</button>";
var savebutton = new dijit.form.Button({
iconClass: "advanSaveIcon",
onClick: saveAction
},
"savebutton");
var cancelbutton = new dijit.form.Button({
iconClass: "advanCancelIcon",
onClick: cancelAction,
},
"cancelbutton");
}
// this is a generic function. parameters are not really needed in this case
function destroyOfficeFieldInline(tableElement, bNew) {
dijit.byId("editofficebox").destroy();
destroySaveCancelButtons();
if (bNew) {
destroyNewRow(tableElement);
}
}
function destroySaveCancelButtons() {
dijit.byId("savebutton").destroy();
dijit.byId("cancelbutton").destroy();
}
function setCellVal(cell, val) {
cell.innerHTML = val;
}
现在,代码首次运行。 但不知何故,如果我点击“编辑”后单击“取消”,再按“编辑”将不会执行任何操作。将不再创建动态字段。 我猜测某些东西没有被正确清理,但我没有想法...... 这段代码出了什么问题?
PS。我愿意采用其他方法来实现这一目标......
[编辑]
我发现这些似乎是令人讨厌的代码行:
operationsCell.innerHTML += "<button id=\"savebutton\">Save</button>";
operationsCell.innerHTML += "<button id=\"cancelbutton\">Cancel</button>";
执行第一个按钮后,单元格内的所有按钮都会丢失其事件侦听器,即onclick。
有人知道这个的原因吗?
答案 0 :(得分:0)
可能这个会帮助你..
首先,你必须将按钮的id存储在temp变量中,你必须使用该变量来销毁控件
例如
var temp = dijit.byId('savebutton');
temp.destroy();
我希望这会对你有所帮助。
答案 1 :(得分:0)
确定。刚刚弄清楚发生了什么(在Dojo社区的帮助下),所以我回到这里分享解决方案。
innerHTMl(假设)附加了新的按钮标签,但事实上它正在被替换,因为+ =运算符的工作方式。 替换后,原始内容被销毁,然后重新创建,但这次没有事件监听器/事件。
因此,解决方案是使用dijit placeAt方法:
function addSaveCancelButtons(table, operationsCell, saveAction, cancelAction) {
var savebutton = new dijit.form.Button({
id: "savebutton",
iconClass: "advanSaveIcon",
label: "Guardar",
onClick: saveAction
}).placeAt(operationsCell);
var cancelbutton = new dijit.form.Button({
id: "cancelbutton",
iconClass: "advanCancelIcon",
label: "Cancelar",
onClick: cancelAction,
}).placeAt(operationsCell);
}