如何使用JavaScript删除表格中的特定行？

Question

what i have implemented so far:

1. Enter the values in the input fields and click " Add" button , The entered values gets added to the new row .
2. And When i click delete button, all the rows are getting deleted .

What I need to implement :

1. Checkbox should get added to every row .
2. If i select the checkbox and click "delete" button, only that particular row should get deleted and it should work if i select multiple check boxes as well. 3.Clear the Input fields after i click add button . Can anyone check this out and tell me how to do that .

 //Javascript code to Add new rows onclick of a button and to delete row . function addMoreRows() { var user = document.getElementById('user_id').value; var date = document.getElementById('date').value; var color = document.getElementById('color').value; var table = document.getElementById('tbl_id'); var row = table.insertRow(); var userName = row.insertCell(0); var Date = row.insertCell(1); var Color = row.insertCell(2); var checkbox = row.insertCell(3); userName.innerHTML = user; Date.innerHTML = date; Color.innerHTML = color; } function deleteMoreRows(tableID) { var table = document.getElementById(tableID); var rowCount = table.rows.length; for (var i = 0; i < rowCount; i++) { table.deleteRow(i); rowCount--; i--; } } 

 <!-- HTML markup for the input fields and table . --> <form align="center" method="GET"> Enter your name : <input type="text" name="users" id="user_id" value="name" onfocus="if(this.value == 'name') {this.value=''}" onblur="if(this.value == ''){this.value ='name'}"><br> Select the Date : <input type="date" id="date"><br> Select your favorite color: <select id="color" required> <option value="yellow">yellow</option> <option value="red">red</option> </select> <br> <br> <input type="button" id="mysubmit" value="Add Row" onClick="addMoreRows()"> <input type="button" id="delete" value="Delete" onClick="deleteMoreRows('tbl_id')"> </form> <br> <br> <table id="tbl_id" style="text-align:center" align="center" valign="top"> <thead> <tr> <th style="width:200px;">Name</th> <th style="width:200px;">Date</th> <th style="width:200px;">Color</th> </tr> </thead> 

Answer 1

Let me know if this works for you:

 //Javascript code to Add new rows onclick of a button and to delete row . var rowId = 0; function addMoreRows() { var user = document.getElementById('user_id').value; var date = document.getElementById('date').value; var color = document.getElementById('color').value; var table = document.getElementById('tbl_id'); var row = table.insertRow(); var rowBox = row.insertCell(0); var userName = row.insertCell(1); var Date = row.insertCell(2); var Color = row.insertCell(3); var checkbox = row.insertCell(4); rowBox.innerHTML = '<input type="checkbox" id="delete' + getRowId() + '">'; userName.innerHTML = user; Date.innerHTML = date; Color.innerHTML = color; } function deleteMoreRows(tableID) { var table = document.getElementById(tableID); var rowCount = table.rows.length; var selectedRows = getCheckedBoxes(); selectedRows.forEach(function(currentValue) { deleteRowByCheckboxId(currentValue.id); }); } function getRowId() { rowId += 1; return rowId; } function getRowIdsFromElements($array) { var arrIds = []; $array.forEach(function(currentValue, index, array){ arrIds.push(getRowIdFromElement(currentValue)); }); return arrIds; } function getRowIdFromElement($el) { return $el.id.split('delete')[1]; } //ref: http://stackoverflow.com/questions/8563240/how-to-get-all-checked-checkboxes function getCheckedBoxes() { var inputs = document.getElementsByTagName("input"); var checkboxesChecked = []; // loop over them all for (var i=0; i < inputs.length; i++) { // And stick the checked ones onto an array... if (inputs[i].checked) { checkboxesChecked.push(inputs[i]); } } // Return the array if it is non-empty, or null return checkboxesChecked.length > 0 ? checkboxesChecked : null; } //ref: http://stackoverflow.com/questions/4967223/delete-a-row-from-a-table-by-id function deleteRowByCheckboxId(CheckboxId) { var checkbox = document.getElementById(CheckboxId); var row = checkbox.parentNode.parentNode; //box, cell, row, table var table = row.parentNode; while ( table && table.tagName != 'TABLE' ) table = table.parentNode; if (!table) return; table.deleteRow(row.rowIndex); } 

 <!-- HTML markup for the input fields and table . --> <form align="center" method="GET"> Enter your name : <input type="text" name="users" id="user_id" value="name" onfocus="if(this.value == 'name') {this.value=''}" onblur="if(this.value == ''){this.value ='name'}"><br> Select the Date : <input type="date" id="date"><br> Select your favorite color: <select id="color" required> <option value="yellow">yellow</option> <option value="red">red</option> </select> <br> <br> <input type="button" id="mysubmit" value="Add Row" onClick="addMoreRows()"> <input type="button" id="delete" value="Delete" onClick="deleteMoreRows('tbl_id')"> </form> <br> <br> <table id="tbl_id" style="text-align:center" align="center" valign="top"> <thead> <tr> <th style="width:200px;">Delete</th> <th style="width:200px;">Name</th> <th style="width:200px;">Date</th> <th style="width:200px;">Color</th> </tr> </thead>