JS动态创建表单post提交

<script>
//@创建表单方法
function post(URL, PARAMS) {
    var temp = document.createElement("form");
    temp.action = URL;
    temp.method = "post";
    temp.style.display = "none";
    for (var x in PARAMS) {
        var opt=document.createElement("input");
        opt.type="text";
        opt.name = x;
        opt.value = PARAMS[x];
        temp.appendChild(opt);
    }
    document.body.appendChild(temp);
    temp.submit();
    return temp;
}
/***
 * 调用表单方法
 * @param url
 * @param data
 */
post('/web/pay', {goods_param :str});
</script>