<html>
<head>
<meta charset="utf-8">
<title>JS Bin</title>
</head>
<body>
<table id = "productos">
<thead>
<tr>
<th>Producto</th>
<th>Costo</th>
<th>Opción</th>
</tr>
</thead>
<tbody>
<tr>
<td>Manzana</td>
<td class = "costo">12.57</td>
<td>
<label>Eliminar</label>
</td>
</tr>
<tr>
<td>Sandía</td>
<td class = "costo">35.41</td>
<td>
<label>Eliminar</label>
</td>
</tr>
<tr>
<td>Melón</td>
<td class = "costo">18.35</td>
<td>
<label>Eliminar</label>
</td>
</tr>
<tr>
<td id = "total" colspan = "3"></td>
</tr>
</tbody>
</table>
</body>
</html>
*{
transition: all ease .25s;
}
table, table td, table th{
border: .1rem solid;
text-align: center;
}
table th{
background: gray;
color: white;
}
table label{
background: lightyellow;
}
table label:hover{
cursor: pointer;
}
//Al cargar el documento, ejecutaremos lo siguiente
document.addEventListener("DOMContentLoaded", function(){
var tbody = document.querySelector("#productos tbody"), //El cuerpo de la tabla
total = tbody.querySelector("#total"), //La celda del total
fila, //Variable a utilizar para almacenar una fila
valor, //El valor de la celda del costo de la fila a eliminar
suma = 0; //La variable acumuladora
//Recorremos al conjunto de celdas con la clase "costo"
[].forEach.call(tbody.querySelectorAll(".costo"), function(costo){
//Y acumulamos sus valores
suma += parseFloat(costo.innerHTML);
});
//Fijamos el valor del acumulado a dos decimales
suma = suma.toFixed(2);
//Mostramos el acumulado en la celda del total
total.innerHTML = "Total: " + suma;
//Recorremos al conjunto de opciones "Eliminar"
[].forEach.call(tbody.querySelectorAll("label"), function(opcion){
//Cuando se dé un clic en alguna de ellas, ejecutaremos una función
opcion.addEventListener("click", function(){
//Tomamos a la fila que contiene al botón pulsado
fila = this.parentNode.parentNode;
//Tomamos al valor de la celda del costo de esta fila
valor = fila.querySelector(".costo").innerHTML;
//Actualizamos el valor de la variable acumuladora
suma -= parseFloat(valor);
//Fijamos el valor del acumulado a dos decimales
suma = suma.toFixed(2);
//Actualizamos el valor de la celda del total
total.innerHTML = "Total: " + suma;
//Eliminamos la fila de la tabla
tbody.removeChild(fila);
}, false);
});
}, false);
Output
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Keyboard Shortcuts
Shortcut | Action |
---|---|
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ctrl + 0 | Close focused panel |
ctrl + enter | Re-render output. If console visible: run JS in console |
Ctrl + l | Clear the console |
ctrl + / | Toggle comment on selected lines |
ctrl + ] | Indents selected lines |
ctrl + [ | Unindents selected lines |
tab | Code complete & Emmet expand |
ctrl + shift + L | Beautify code in active panel |
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Complete list of JS Bin shortcuts |
JS Bin URLs
URL | Action |
---|---|
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/edit | Edit the current bin |
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