Javascript 每次重新绘制Google图表时,都会创建新的containerTable
我有一个提交按钮,用于提交Javascript 每次重新绘制Google图表时,都会创建新的containerTable,javascript,jquery,google-visualization,Javascript,Jquery,Google Visualization,我有一个提交按钮,用于提交谷歌图表中注释图表的日期/时间段 当我点击按钮时,它会用新的查询结果重新绘制图表 function drawChart(myData, id) { var data = new google.visualization.DataTable(); var params = myData[0]; for(var i = 0; i < params.length; i++) { data.addColumn(params[i][
谷歌图表
中注释图表
的日期/时间段
当我点击按钮时,它会用新的查询结果重新绘制图表
function drawChart(myData, id) {
var data = new google.visualization.DataTable();
var params = myData[0];
for(var i = 0; i < params.length; i++) {
data.addColumn(params[i][0], params[i][1]); //type and name pair
}
var q_result = myData[1];
var rows = new Array(q_result.length);
for(var i = 0; i < q_result.length; i++) {
tmp_array = [];
for(var j = 0; j < q_result[0].length; j++) {
var tobeadded = params[j][0]=='date'?
new Date(q_result[i][j]) : q_result[i][j];
tmp_array.push(tobeadded);
}
rows[i] = tmp_array;
}
data.addRows(rows);
var chart = new google.visualization.AnnotationChart(
document.getElementById('chart_div'+id));
var options = {
displayAnnotations: true,
};
chart.draw(data, options);
}
它会重新绘制图表,但每次都会生成一个尾随的空容器,如下面的屏幕截图所示
如果您看到屏幕截图,您可以看到有两个chart\u div2\u AnnotationChart\u containerTable
我不能简单地忽略或删除这个新的containerTable,因为它包含刷新图表的按钮和注释
我怎样才能解决这个问题
当我重新绘制图表时,我使用新的查询结果调用下面的函数
function drawChart(myData, id) {
var data = new google.visualization.DataTable();
var params = myData[0];
for(var i = 0; i < params.length; i++) {
data.addColumn(params[i][0], params[i][1]); //type and name pair
}
var q_result = myData[1];
var rows = new Array(q_result.length);
for(var i = 0; i < q_result.length; i++) {
tmp_array = [];
for(var j = 0; j < q_result[0].length; j++) {
var tobeadded = params[j][0]=='date'?
new Date(q_result[i][j]) : q_result[i][j];
tmp_array.push(tobeadded);
}
rows[i] = tmp_array;
}
data.addRows(rows);
var chart = new google.visualization.AnnotationChart(
document.getElementById('chart_div'+id));
var options = {
displayAnnotations: true,
};
chart.draw(data, options);
}
最初绘制图表时,将从下面的函数调用它
function g(idx, start, end) {
var xmlhttp;
if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else {// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET", '/${conf["name"]}/submit_data?idx=' + idx + '&start=' + start + '&end=' + end, true);
xmlhttp.onreadystatechange = function(i) {
return function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
drawChart(JSON.parse(xmlhttp.responseText), i);
}
};
}(idx);
xmlhttp.send();
}
function getData() {
// code for IE7+, Firefox, Chrome, Opera, Safari
xhrs = [];
if(window.XMLHttpRequest) {
for (var i = 0; i < ${size}; ++i) {
xhrs.push(new XMLHttpRequest());
}
}
else { // code for IE6, IE5
for (var i = 0; i < ${size}; ++i) {
xhrs.push(new ActiveXObject("Microsoft.XMLHTTP"));
}
}
for (var i = 0; i < ${size}; ++i) {
xhrs[i].open("GET", '/${conf["name"]}/submit_data?idx=' + i, true);
xhrs[i].onreadystatechange = function(idx) {
return function() {
if(xhrs[idx].readyState == 4 && xhrs[idx].status == 200) {
drawChart(JSON.parse(xhrs[idx].responseText), idx);
}
};
}(i);
xhrs[i].send();
}
}
函数getData(){
//IE7+、Firefox、Chrome、Opera、Safari的代码
xhrs=[];
if(window.XMLHttpRequest){
对于(变量i=0;i<${size};++i){
push(新的XMLHttpRequest());
}
}
else{//IE6、IE5的代码
对于(变量i=0;i<${size};++i){
push(新的ActiveXObject(“Microsoft.XMLHTTP”);
}
}
对于(变量i=0;i<${size};++i){
xhrs[i].open(“GET”,'/${conf[“name”]}/submit_data?idx='+i,true);
xhrs[i].onreadystatechange=函数(idx){
返回函数(){
if(xhrs[idx].readyState==4&&xhrs[idx].status==200){
drawChart(JSON.parse(xhrs[idx].responseText),idx);
}
};
}(i) );
xhrs[i].send();
}
}
以下是一些重用图表对象而不是重新创建它们的示例代码:
function drawCharts () {
var data = [], charts = [], xhrs = [], options = {
displayAnnotations: true
};
for (var i = 0; i < ${size}; ++i) {
if(window.XMLHttpRequest) {
// code for IE7+, Firefox, Chrome, Opera, Safari
xhrs.push(new XMLHttpRequest());
}
else {
// code for IE6, IE5
// you probably want to throw an error here, since the visualization API does not support IE 5, 6 anyway
xhrs.push(new ActiveXObject("Microsoft.XMLHTTP"));
}
charts.push(new google.visualization.AnnotationChart(document.getElementById('chart_div'+id));
xhrs[i].open("GET", '/${conf["name"]}/submit_data?idx=' + i, true);
xhrs[i].onreadystatechange = function(idx) {
return function() {
if(xhrs[idx].readyState == 4 && xhrs[idx].status == 200) {
var myData = JSON.parse(xhrs[idx].responseText);
data[idx] = new google.visualization.DataTable();
var params = myData[0];
for(var i = 0; i < params.length; i++) {
data[idx].addColumn(params[i][0], params[i][1]); //type and name pair
}
var q_result = myData[1];
var rows = new Array(q_result.length);
for(var i = 0; i < q_result.length; i++) {
tmp_array = [];
for(var j = 0; j < q_result[0].length; j++) {
var tobeadded = params[j][0]=='date' ? new Date(q_result[i][j]) : q_result[i][j];
tmp_array.push(tobeadded);
}
rows[i] = tmp_array;
}
data[idx].addRows(rows);
charts[idx].draw(data[idx], options);
}
};
}(i);
xhrs[i].send();
}
}
函数绘图图(){
变量数据=[]、图表=[]、xhrs=[]、选项={
displayAnnotations:true
};
对于(变量i=0;i<${size};++i){
if(window.XMLHttpRequest){
//IE7+、Firefox、Chrome、Opera、Safari的代码
push(新的XMLHttpRequest());
}
否则{
//IE6、IE5的代码
//您可能想在这里抛出一个错误,因为可视化API无论如何都不支持IE5、6
push(新的ActiveXObject(“Microsoft.XMLHTTP”);
}
charts.push(新的google.visualization.AnnotationChart(document.getElementById('chart_div'+id));
xhrs[i].open(“GET”,'/${conf[“name”]}/submit_data?idx='+i,true);
xhrs[i].onreadystatechange=函数(idx){
返回函数(){
if(xhrs[idx].readyState==4&&xhrs[idx].status==200){
var myData=JSON.parse(xhrs[idx].responseText);
data[idx]=新的google.visualization.DataTable();
var params=myData[0];
对于(变量i=0;i
你能在调用drawchart()
的地方发布代码吗?我发布了它们。谢谢你似乎遇到了一个bug()。我建议重新编写代码以使用相同的图表对象(而不是每次调用drawchart
),只更改数据。这样应该可以避免问题。@asgallent你能说得更具体一点吗?