'undefined' is not a function evaluating XX.click() in Safari

JS：
function selectInfoById(this_) {
    var uid = $(this_).siblings("input[name=uid]").val();
    var url = "/mobile/queryInfoById?uid="+uid;
    var elementById = document.getElementById("jumphiddenDiv");
    var aElement = document.createElement("a");
    aElement.setAttribute("id","createa");
    aElement.setAttribute("href",url);
    aElement.setAttribute("data-no-cache","true");
    elementById.appendChild(aElement);
    //jQuery("#createa")[0].click();
    // First create an event
    var click_ev = document.createEvent("MouseEvents");
    // initialize the event
    click_ev.initEvent("click", true /* bubble */, true /* cancelable */);
    // trigger the event
    document.getElementById("createa").dispatchEvent(click_ev);
    aElement.remove();
}

HTML：改动
<div class="info_content txt-item" onclick="selectInfoById(this)" ontouchstart = "myTouchStart(this)" ontouchend = "myTouchEnd(this)" ontouchmove="myTouchMove(this)">
JS：添加
var xtarget = "";
function myTouchStart(this_) {
	var e = window.event;
	xtarget = e.clientX;
}

function myTouchEnd(this_) {
	var e = window.event;
	if(e.clientX ==xtarget){
        selectInfoById(this_);
        xtarget="";
	}else{
        xtarget="";
	}
}
function myTouchMove(this_) {
    xtarget="";
}
这些方法写的非常初级，仅供思路参考，表喷我哦。