i need to convert this code from javascript to typescript please write like this code on type script (ts) var students = []; var selectedRow = null; function onFormSubmit() { if (validate()) { var students = readDataForm(); if (selectedRow == null) insertNewRecord(students); else updateRecord(students); resetForm(); } } function validate() { isValid = true; if (document.getElementById("name").value == "") { isValid = false; document.getElementById("nameValidationError").classList.remove("hide"); } else { isValid = true; if (!document.getElementById("nameValidationError").classList.contains("hide")) document.getElementById("nameValidationError").classList.add("hide"); } return isValid; } function resetForm() { document.getElementById("name").value = ""; document.getElementById("idNumber").value = ""; document.getElementById("gdpa").value = ""; selectedRow = null; } function readDataForm() { var students = {}; students["name"] = document.getElementById("name").value; students["idNumber"] = document.getElementById("idNumber").value; students["gdpa"] = document.getElementById("gdpa").value; return students; } function insertNewRecord(data) { var table = document.getElementById("studentList").getElementsByTagName('tbody')[0]; var newRow = table.insertRow(table.length); cell1 = newRow.insertCell(0); cell1.innerHTML = data.name; cell2 = newRow.insertCell(1); cell2.innerHTML = data.idNumber; cell3 = newRow.insertCell(2); cell3.innerHTML = data.gdpa; cell3 = newRow.insertCell(3); cell3.innerHTML = `Update Delete`; } function onUpdate(td) { selectedRow = td.parentElement.parentElement; document.getElementById("name").value = selectedRow.cells[0].innerHTML; document.getElementById("idNumber").value = selectedRow.cells[1].innerHTML; document.getElementById("gdpa").value = selectedRow.cells[2].innerHTML; } function updateRecord(students) { selectedRow.cells[0].innerHTML = students.name; selectedRow.cells[1].innerHTML = students.idNumber; selectedRow.cells[2].innerHTML = students.gdpa; } function onDelete(td) { if (confirm('Click OK if you want to delete this recording!')) { row = td.parentElement.parentElement; document.getElementById("studentList").deleteRow(row.rowIndex); resetForm(); }
i need to convert this code from javascript to typescript
please write like this code on type script (ts)
var students = [];
var selectedRow = null;
function onFormSubmit() {
if (validate()) {
var students = readDataForm();
if (selectedRow == null)
insertNewRecord(students);
else
updateRecord(students);
resetForm();
}
}
function validate() {
isValid = true;
if (document.getElementById("name").value == "") {
isValid = false;
document.getElementById("nameValidationError").classList.remove("hide");
} else {
isValid = true;
if (!document.getElementById("nameValidationError").classList.contains("hide"))
document.getElementById("nameValidationError").classList.add("hide");
}
return isValid;
}
function resetForm() {
document.getElementById("name").value = "";
document.getElementById("idNumber").value = "";
document.getElementById("gdpa").value = "";
selectedRow = null;
}
function readDataForm() {
var students = {};
students["name"] = document.getElementById("name").value;
students["idNumber"] = document.getElementById("idNumber").value;
students["gdpa"] = document.getElementById("gdpa").value;
return students;
}
function insertNewRecord(data) {
var table = document.getElementById("studentList").getElementsByTagName('tbody')[0];
var newRow = table.insertRow(table.length);
cell1 = newRow.insertCell(0);
cell1.innerHTML = data.name;
cell2 = newRow.insertCell(1);
cell2.innerHTML = data.idNumber;
cell3 = newRow.insertCell(2);
cell3.innerHTML = data.gdpa;
cell3 = newRow.insertCell(3);
cell3.innerHTML = `Update
Delete`;
}
function onUpdate(td) {
selectedRow = td.parentElement.parentElement;
document.getElementById("name").value = selectedRow.cells[0].innerHTML;
document.getElementById("idNumber").value = selectedRow.cells[1].innerHTML;
document.getElementById("gdpa").value = selectedRow.cells[2].innerHTML;
}
function updateRecord(students) {
selectedRow.cells[0].innerHTML = students.name;
selectedRow.cells[1].innerHTML = students.idNumber;
selectedRow.cells[2].innerHTML = students.gdpa;
}
function onDelete(td) {
if (confirm('Click OK if you want to delete this recording!')) {
row = td.parentElement.parentElement;
document.getElementById("studentList").deleteRow(row.rowIndex);
resetForm();
}
}
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