js模拟form表单提交

var items = this.searchForm.getForm().items.items;
        var dataParam = this.getDailyDataParam(items);
        var tempform = document.createElement("form");
        tempform.action = this.ctx + '/addata/exportAdMasterDaily.sdo';
        tempform.method = "post";
        tempform .target = "_blank";
        tempform.style.display = "none"

        for (var x in dataParam) {
            if(dataParam[x] instanceof Array && dataParam[x].length >1){
            	for (var int = 0; int < dataParam[x].length; int++) {
            		var opt = document.createElement("input");
                    opt.name = x;
            		opt.value = dataParam[x][int];
            		tempform.appendChild(opt);
				}
            }else{
            	var opt = document.createElement("input");
                opt.name = x;
            	opt.value = dataParam[x];
            	tempform.appendChild(opt);
            }
        }
        var opt = document.createElement("input");
        opt.type = "submit";
        tempform.appendChild(opt);
        document.body.appendChild(tempform);
        tempform.submit();
        document.body.removeChild(tempform);