3 examples of 'find special characters in string' in JavaScript

1
export function escapeSpecialChars(str) {
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    return str
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        .replace(/&/g, "&")
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        .replace(//g, ">")
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        .replace(/"/g, """)
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        .replace(/'/g, "'");
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}

140
function SpecialCharDecode(s) {
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    var tagsToReplace = {
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        '<': '<',
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        '>': '>',
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        '[': '[',
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        ']': ']',
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        '"': '"'
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    };
148
149
    return s.replace(/<|>|[|]|"/g, function (tag) {
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        return tagsToReplace[tag] || tag;
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    });
152
    //return s.replace(/\[/g, "[").replace(/\]/g, "]").replace(/\"/g, "'");
153
    //return s.replace(/[\u00A0-\u9999<>\&]/gim, function(i) {					   return '&#'+i.charCodeAt(0)+';';					});
154
}

11
function filterControlCharacters(string) {
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  if(string) {
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    return string.replace(/[\x00-\x1F\x7F-\x9F]/g, '');
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  }
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}