Javascript Checkbox select/unselect

Question

Im using java script in JSP the problem is i need auto refresh on selectin checkbox it's working fine but on unselecting it's not stopping the auto refresh activity .plz suggest Thanks in advance

function autorefresh() {
    var isChecked = document.getElementById("is_check").checked;
    var time = 0;
    if (isChecked == true) {
        time = setInterval(function () {
            showExport()
        }, 5000);
    } else if (isChecked == false) {
        clearInterval(time);
    }
}

Answer 1

那是因为您要在autorefresh上下文中定义time变量，因此它不再存储时间间隔的ID，而应在函数外部定义它。

Answer 2

Define time variable as global:

window.time=0;     //global declaration
function autorefresh() {
    var isChecked = document.getElementById("is_check").checked;
    if (isChecked == true) {
        time = setInterval(function () {
            showExport()
        }, 5000);
    } else if (isChecked == false) {
        clearInterval(time);
    }
}