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/**
 * Removes children nodes from a specified element.
 *
 * @param el An HTMLElement
 */
function clearChildren (el) {
    while (el.firstChild) {
        el.removeChild(el.firstChild)
    }
}

/**
 * Removes children nodes from a specified element.
 *
 * @param el An HTMLElement
 */
function clearChildren (el) {
    for (var i = el.children.length; i--;) {
        el.removeChild(el.children[i])
    }
}