/**
* js模拟form表单提交
* @param {object} 参数对象
*    url       必填  提交地址
*    methond   选填  默认post  提交方式  post  get
*    target    选填  默认_self  当前页面还是新页面   _self _blank
*              其它参数
*/
function jsFormSubmit(params) {var turnForm = document.createElement("form");//一定要加入到body中！！document.body.appendChild(turnForm);var method = params['methond'] || "POST"; //默认为postturnForm.method = method;delete params['methond'];var target = params['target'] || "_self";    //默认为当前页面turnForm.target = target;delete params['target'];var url = params.url; //提交地址turnForm.action = url;delete params['url'];//创建隐藏表单for(var item in params){var newElement = document.createElement("input");newElement.setAttribute("type","hidden");newElement.setAttribute("name",item);newElement.setAttribute("value",params[item]);turnForm.appendChild(newElement);}turnForm.submit();
}

var params = {//必填参数"url":url,"methond":"post","target":"_blank",//下边为要提交的数据"j_username":"SYNKMXS0000000043","j_password":"3258"
}
formSubmit(params);

/**
* js模拟a点击
* @param {string}  url       必填  提交地址
* @param {string}  target    选填  默认_self  当前页面还是新页面   _self _blank
*/
function jsALink(url,target) {var target = target || "_blank";//先读取alink 不存在则创建var alink = document.getElementById("alink");if(alink==undefined)  alink=document.createElement("a");//赋值alink.id = "alink";alink.href = url;alink.target = target;alink.style = "display: none;";//写入页面document.body.appendChild(alink);//执行点击事件document.getElementById("alink").click();
}

jsALink("http://www.jsfun.cn","_blank");