js+获取元素滚动条高度

function getScrollHeight(element) {
    return element.scrollHeight - element.clientHeight;
}

// 使用示例
var element = document.getElementById('yourElementId');
var scrollHeight = getScrollHeight(element);
console.log(scrollHeight); // 输出滚动条高度

function getScrollHeightWithScrollbar(element) {
    return element.scrollHeight - element.offsetHeight;
}

// 使用示例
var element = document.getElementById('yourElementId');
var scrollHeightWithScrollbar = getScrollHeightWithScrollbar(element);
console.log(scrollHeightWithScrollbar); // 输出滚动条高度

window.onload = function() {
    var element = document.getElementById('yourElementId');
    // 确保元素内容已经加载完成
    setTimeout(function() {
        var scrollHeight = getScrollHeight(element);
        console.log(scrollHeight);
    }, 0);
};