Html+JavaScript实现表格（table）单选与多选

Posted 2022-01-08 web半晨

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1、单选

<table class="radio-table" border>
	<thead>
		<tr>
			<th>#</th>
			<th>id</th>
			<th>姓名</th>
			<th>年龄</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td>
				<input type="radio" name="select" value="1" onclick="clickRadio()">
			</td>
			<td>1</td>
			<td>张三</td>
			<td>20</td>
		</tr>
		<tr>
			<td>
				<input type="radio" name="select" value="2" onclick="clickRadio()">
			</td>
			<td>2</td>
			<td>李四</td>
			<td>21</td>
		</tr>
		<tr>
			<td>
				<input type="radio" name="select" value="3" onclick="clickRadio()">
			</td>
			<td>3</td>
			<td>王五</td>
			<td>24</td>
		</tr>
	</tbody>
</table>
<h3>当前选择: <span id="checked"></span></h3>
<script src="./index.js"></script>

function clickRadio() 
    document.getElementById('checked').innerhtml = document.querySelector('.radio-table tbody input[type=radio]:checked').value;

2、多选

<table class="multi-table" border>
	<thead>
		<tr>
			<th>
				<input id="js-all-checkbox" type="checkbox" onclick="checkAll(this)">
			</th>
			<th>id</th>
			<th>姓名</th>
			<th>年龄</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td>
				<input type="checkbox" name="select" value="1" oninput="clickCheckbox()">
			</td>
			<td>1</td>
			<td>张三</td>
			<td>16</td>
		</tr>
		<tr>
			<td>
				<input type="checkbox" name="select" value="2" oninput="clickCheckbox()">
			</td>
			<td>2</td>
			<td>李四</td>
			<td>17</td>
		</tr>
		<tr>
			<td>
				<input type="checkbox" name="select" value="3" onclick="clickCheckbox()">
			</td>
			<td>3</td>
			<td>王五</td>
			<td>19</td>
		</tr>
	</tbody>
</table>

<h3>当前选中: <span id="js-check-text"></span></h3>

<script src="./index.js"></script>

let checkValues = [];

function clickCheckbox(e) 
    let checkDomArr = document.querySelectorAll('.multi-table tbody input[type=checkbox]:checked');
    checkValues = [];
    for (let i = 0, len = checkDomArr.length; i < len; i++) 
        checkValues.push(checkDomArr[i].value);
    
    updateText();
    let allCheckDomArr = document.querySelectorAll('.multi-table tbody input[type=checkbox]');
    let allCheckbox = document.getElementById('js-all-checkbox');
    for (let i = 0, len = allCheckDomArr.length; i < len; i++) 
        if (!allCheckDomArr[i].checked) 
            if (allCheckbox.checked) allCheckbox.checked = false;
            break;
         else if (i === len - 1) 
            document.getElementById('js-all-checkbox').checked = true;
            return;
        
    


function checkAll(current) 
    let allCheckDomArr = document.querySelectorAll('.multi-table tbody input[type=checkbox]');
    if (!current.checked)  // 点击的时候, 状态已经修改, 所以没选中的时候状态时true
        checkValues = [];
        for (let i = 0, len = allCheckDomArr.length; i < len; i++) 
            let checkStatus = allCheckDomArr[i].checked;
            if (checkStatus) allCheckDomArr[i].checked = false;
        
     else 
        checkValues = [];
        for (let i = 0, len = allCheckDomArr.length; i < len; i++) 
            let checkStatus = allCheckDomArr[i].checked;
            if (!checkStatus) allCheckDomArr[i].checked = true;
            checkValues.push(allCheckDomArr[i].value);
        
    
    updateText();


function updateText() 
	document.getElementById('js-check-text').innerHTML = JSON.stringify(checkValues);