JavaScript - convert string variable to json text

var text = 'This is example text...';

var json = JSON.stringify(text);

​

console.log(json);

var expressions = [ 

    // operations order is important

    { rule: /\\/g, result: '\\\\' },

    { rule: /"/g,  result: '\\"' }

];

​

function serializeString(text) {

    if(text) {

        for(var i = 0; i < expressions.length; ++i) {

            var expression = expressions[i];

​

            text = text.replace(expression.rule, expression.result);

        }

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        return '"' + text + '"';

    }

    return null;

}

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// Example:

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var text = 'Example SQL query: \"SELECT * FROM `users`;"';

var json = serializeString(text);

​

console.log(json);