Javascript 动态div工作但不显示数据
谁能告诉我我做错了什么?在控制台日志的htmlStr=theName行之后,我得到了在表单中输入的名称,保存在数据库中,然后查询回来。然而,我没有得到结果显示在页面的最后。我已经测试了div append,它正在工作。 HTML JavascriptJavascript 动态div工作但不显示数据,javascript,sqlite,dom,Javascript,Sqlite,Dom,谁能告诉我我做错了什么?在控制台日志的htmlStr=theName行之后,我得到了在表单中输入的名称,保存在数据库中,然后查询回来。然而,我没有得到结果显示在页面的最后。我已经测试了div append,它正在工作。 HTML Javascript function queryDB() { var sqlStr = "SELECT * FROM USERS ORDER BY id ASC"; console.log("SQL: " + sqlStr); db.
function queryDB() {
var sqlStr = "SELECT * FROM USERS ORDER BY id ASC";
console.log("SQL: " + sqlStr);
db.transaction(function(tx) {
tx.executeSql(sqlStr, [], querySuccess, onQueryFailure);
}, onSqlError, onSqlSuccess);
console.log("Leaving queryDB");
}
function querySuccess(tx, results) {
console.log('You are in querysuccess');
console.log(results);
if (results.rows.length == 0) {
$("#showUsers").html("No data");
return false;
}
var htmlStr="";
var theID;
var theName;
var thePhoto;
var len = results.rows.length;
console.log(len);
for(var i = 0; i < len; i++){
theID = results.rows.item(i).id;
console.log(theID);
theName = results.rows.item(i).username;
htmlStr += theName;
console.log(theName);
thePhoto = results.rows.item(i).imagepath;
console.log(thePhoto);
var userDiv = document.createElement("div");//Create the div
userDiv.innerHTML=htmlStr;
document.getElementById('showUsers').appendChild(userDiv);//append it to the document
userDiv.style.display = 'block';
};
}
querySuccess是如何调用的?它是从queryDB函数调用的-从用户中选择*等等。您使用SQL语句调用JavaScript函数吗?这个过程是从什么开始的?显示调用代码。是buton点击、表单提交等吗?抱歉,在本例中,queryDB函数首先使用按钮调用所有用户,然后调用该函数。我已经修改了代码以显示这两种情况。您是否忘记使用正确的处理程序名称querySuccess重播onSqlSuccess?完成查询后,div元素是否正确创建?
function queryDB() {
var sqlStr = "SELECT * FROM USERS ORDER BY id ASC";
console.log("SQL: " + sqlStr);
db.transaction(function(tx) {
tx.executeSql(sqlStr, [], querySuccess, onQueryFailure);
}, onSqlError, onSqlSuccess);
console.log("Leaving queryDB");
}
function querySuccess(tx, results) {
console.log('You are in querysuccess');
console.log(results);
if (results.rows.length == 0) {
$("#showUsers").html("No data");
return false;
}
var htmlStr="";
var theID;
var theName;
var thePhoto;
var len = results.rows.length;
console.log(len);
for(var i = 0; i < len; i++){
theID = results.rows.item(i).id;
console.log(theID);
theName = results.rows.item(i).username;
htmlStr += theName;
console.log(theName);
thePhoto = results.rows.item(i).imagepath;
console.log(thePhoto);
var userDiv = document.createElement("div");//Create the div
userDiv.innerHTML=htmlStr;
document.getElementById('showUsers').appendChild(userDiv);//append it to the document
userDiv.style.display = 'block';
};
}