原生js实现for循环占位符绑定数据，类似模拟vue循环渲染数据

let ar = [
    { label: '显示文本1', value: 1 },
    { label: '显示文本2', value: 2 },
    { label: '显示文本3', value: 3 },
    { label: '显示文本4', value: 4 },
    { label: '显示文本5', value: 5 },]
    , html = '', tpl = '<p>{value}：{label}</p>', dom = document.querySelector("html");
for (let i = 0, len = ar.length; i < len; i++) {
    let a = ar[i];
    html += tpl
        .replace(/{value}/g, a.value)
        .replace(/{label}/g, a.label)
}
dom.innerHTML = html;