Check out example codes for "javascript escape html string". It will help you in understanding the concepts better.

Code Example 1

function escapeHtml(str) {
    return str.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/"/g, "&quot;").replace(/'/g, "&#039;");
}

Code Example 2

//escaping HTML with jquery
var dangerousHTML = "<script>alert('Badabing Baby!');</script>";
$("#myElementID").text(dangerousHTML); //.text() function will escape and display text


//Alternatively, here is plain Javascript escape function
function escapeHtml(str) {
    return str.replace(/&/g, "&").replace(/</g, "<").replace(/>/g, ">").replace(/"/g, """).replace(/'/g, "'");
}

Learn ReactJs, React Native from akashmittal.com