我有一段代码在循环中的表中创建复选框并调用它们的onclick函数。在onclick函数中,我尝试填充一个全局数组,该数组将成为表格的选中复选框的位置持有者。此外,如果选中一行,我必须将该行的文本字段中的数字相加(我将其添加到变量百分比),如果变量超过100,我必须提醒用户并要求他在复选框中输入值总和小于100。
发生的事情是,当百分比> 100时,它会抛出一个警报(我已添加)。如果有3个复选框具有值34,56,10并且如果选择这3个,则允许我提交提交按钮。但是如果我回去并取消选中10行,则会发出警告,称percantage是110(应该是90)
如何解决此问题?
代码:
var tabId = document.getElementById("AmnestyTransTbl");
var tabrows = tabId.getElementsByTagName('tr');
var percentage = 0,
c, n;
var ar = [];
for (var i = 1, c = 2; i <= tabrows.length - 3; i++, c = c + 2) {
// Create CheckBox
ar[i] = c;
var checkBox = document.createElement("input");
checkBox.setAttribute("type", "checkbox");
checkBox.id = 'CB'.concat(i);
checkBox.onclick = function () {
var tabId1 = document.getElementById("AmnestyTransTbl");
var rowInd = getRowIndex(this);
CBValue[rowInd] = this.checked;
n = ar[rowInd - 1];
percentage = (parseInt(percentage) + parseInt(tabId1.getElementsByTagName("input")[n].value));
if (parseInt(percentage) > 100) {
alert("Amnesty Percentage," + percentage + ", greater than 0!. Plesase check again.");
this.checked = false;
}
if (this.checked == false) percentage = parseInt(percentage) - parseInt(tabId1.getElementsByTagName("input")[n].value);
}
}
var td = document.createElement("td");
td.appendChild(checkBox);
tabrows[i + 1].cells[1].appendChild(td);
}
function getRowIndex(el) {
while ((el = el.parentNode) && el.nodeName.toLowerCase() != 'tr');
if (el) return el.rowIndex;
}
答案 0 :(得分:0)
试试这段代码......
var tabId = document.getElementById("AmnestyTransTbl");
var tabrows = tabId.getElementsByTagName('tr');
var percentage = 0,
c, n;
var ar = [];
for (var i = 1, c = 2; i <= tabrows.length - 3; i++, c = c + 2) {
// Create CheckBox
ar[i] = c;
var checkBox = document.createElement("input");
checkBox.setAttribute("type", "checkbox");
checkBox.id = 'CB'.concat(i);
checkBox.onclick = function () {
var tabId1 = document.getElementById("AmnestyTransTbl");
var rowInd = getRowIndex(this);
CBValue[rowInd] = this.checked;
n = ar[rowInd - 1];
if (this.checked == false)
percentage = parseInt(percentage) - parseInt(tabId1.getElementsByTagName("input")[n].value);
else
percentage = (parseInt(percentage) + parseInt(tabId1.getElementsByTagName("input")[n].value));
if (parseInt(percentage) > 100) {
alert("Amnesty Percentage," + percentage + ", greater than 0!. Plesase check again.");
this.checked = false;
}
}
}
var td = document.createElement("td");
td.appendChild(checkBox);
tabrows[i + 1].cells[1].appendChild(td);
}
function getRowIndex(el) {
while ((el = el.parentNode) && el.nodeName.toLowerCase() != 'tr');
if (el) return el.rowIndex;
}