多選，全選，反選

• js實現複選框的多選，全選，反選

js實現複選框的多選，全選，反選

<table>
	<thead>
		<tr>
			<th><input type="checkbox" name="chkAllResourceType" id="chkAllResourceType" onclick="selectAll()">全選</th>
			<th>測試一</th>
			<th>測試二</th>
			<
 
th>測試三</th>
			<th>測試四</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td><input type="checkbox" name="resourceType"  id="resourceType" value="1" ></td>
			<td>1</td>
			<td>2</td>
			<td>3</td>
			<td>4</td
 
>
		</tr>
		<tr>
			<td><input type="checkbox" name="resourceType"  id="resourceType" value="2" ></td>
			<td>1</td>
			<td>2</td>
			<td>3</td>
			<td>4</td>
		</tr>
		<tr>
			<td><input type="checkbox" name
 
="resourceType"  id="resourceType" value="3" ></td>
			<td>1</td>
			<td>2</td>
			<td>3</td>
			<td>4</td>
		</tr>
		<tr>
			<td><input type="checkbox" name="resourceType"  id="resourceType" value="4" ></td>
			<td>1</td>
			<td>2</td>
			<td>3</td>
			<td>4</td>
		</tr>
	</tbody>
</table>

/* 多選  全選  反選   */
var thEle = document.getElementById("chkAllResourceType");
var selEle = document.getElementsByName("resourceType");
var checkboxSelect = []; // 存放選中資料 
var tmp = 0;
// 表格全選，反選
function selectAll() {
	if(thEle.checked == true) {
		checkboxSelect = [];
		for(var i = 0; i < selEle.length; i++) {
			selEle[i].checked = true;
		}
	} else {
		checkboxSelect = [];
		for(var i = 0; i < selEle.length; i++) {
			selEle[i].checked = false;
		}
		tmp=0;
	}
}

// 表格多選
for(var i = 0; i < selEle.length; i++) {
	selEle[i].onclick = function() {
		if(this.checked == true) {
			console.log("選中為： "+this);
			tmp++;
		} else {
			tmp--;
		}
		if(tmp == selEle.length) {
			thEle.checked = true;
		} else {
			thEle.checked = false;
		}
	}
} 

// 獲取表格中，選中的值id
function checkedValues() {
	checkboxSelect = [];
	var arr = new Array();
	var temp = document.getElementsByName('resourceType');
	for (var i = 0; i < temp.length; i++) {
		if (temp[i].checked == true) {
			arr.push(temp[i].value);
			checkboxSelect.push(selEle[i].value); 	// 獲取選中的值
		}
	} 
}