function isBlank(char) {
        return (char === ' ' ||
            char === '\f' ||
            char === '\n' ||
            char === '\r' ||
            char === '\t' ||
            char === '\v' ||
            char === '\u00A0' ||
            char === '\u2028' ||
            char === '\u2029');
    }
// test a char whether a whitespace char

test a char whether a whitespace char
test a char whether a whitespace char
function isBlank(char) {
        return (char === ' ' ||
            char === '\f' ||
            char === '\n' ||
            char === '\r' ||
            char === '\t' ||
            char === '\v' ||
            char === '\u00A0' ||
            char === '\u2028' ||
            char === '\u2029');
    }
function isBlank ( char ) { return ( char === ' ' || char === '\f' || char === '\n' || char === '\r' || char === '\t' || char === '\v' || char === '\u00A0' || char === '\u2028' || char === '\u2029' ) ; }
test a char whether a whitespace char
test a char whether a whitespace char