function gtCity(val) {
baidu.ajax.post("http://fe.baidu.com/dev/tangram/assets/ajaxRequest.php", "x=" + val,
function(xhr, responseText) {
if (xhr.status == 200) {
if (val == "") {} else {
alert("状态" + xhr.status + "请求成功" + responseText);
}
} else {
alert("传输错误")
}
});
}
//说明:如果为空不执行任何函数
更好的写法(先声明)
var gtCity = function(val){
if(val==""){
return;
}
baidu.ajax.post("http://fe.baidu.com/dev/tangram/assets/ajaxRequest.php", "x=" + val,
function(xhr, responseText) {
if (xhr.status == 200) {
alert("状态" + xhr.status + "请求成功" + responseText);
} else {
alert("传输错误")
}
});
}