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Read Cookie value in JS

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Last Modified: 2020-09-03
Do you see any wrong with the source codes below? I try to capture cookie name/value in javascript. The cookie is generated from MVC.net app.
You can see attach screenshot.
Thanks


<script>
    $(window).on('load', function () {
        var value = readCookie('.ASPXAUTH');
        alert("Cookie Name: " + value);
    })

    function readCookie(name) {
        var nameEQ = name + "=";
        var ca = document.cookie.split(';');
        for (var i = 0; i < ca.length; i++) {
            var c = ca[i];
            while (c.charAt(0) == ' ') c = c.substring(1, c.length);
            if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
        }
        return null;
    }
</script>

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