Example code for converting html table data to Json format

<script>
var keysArr = new Array("key0", "key1", "key2");
function TableToJson(tableid) { //tableid is the name of the table you want to convert, a string, such as "example"
var rows = document.getElementById(tableid).rows.length; //Get the number of rows (including thead)
var colums = document.getElementById(tableid).rows[0].cells.length; //Get the number of columns
var json = "[";
var tdValue;
for (var i = 1; i < rows; i++) { //each row
json += "{";
for (var j = 0; j < colums; j++) {
tdName = keysArr[j]; //Key of Json data
json += "\""; //Add a double quote
json += tdName;
json += "\"";
json += ":";
tdValue = document.getElementById(tableid).rows[i].cells[j].innerHTML; //The value of the Json data
if (j === 1) {//The first column is in date format and needs to be added as follows according to JSON requirements
tdValue = "\/Date(" + tdValue + ")\/";
}
json += "\"";
json += tdValue;
json += "\"";
json += ",";
}
json = json.substring(0, json.length - 1);
json += "}";
json += ",";
}
json = json.substring(0, json.length - 1);
json += "]";
return json;
}
</script>