Convert a percent string to absolute number - Node.js String

Node.js examples for String:Convert

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Description

Convert a percent string to absolute number

Demo Code


/**//from   www  .  j  a v  a  2  s  .c o  m
     * Convert a percent string to absolute number.
     * Returns NaN if percent is not a valid string or number
     * @memberOf module:echarts/util/number
     * @param {string|number} percent
     * @param {number} all
     * @return {number}
*/
number.parsePercent = function(percent, all) {
        switch (percent) {
            case 'center':
            case 'middle':
                percent = '50%';
                break;
            case 'left':
            case 'top':
                percent = '0%';
                break;
            case 'right':
            case 'bottom':
                percent = '100%';
                break;
        }
        if (typeof percent === 'string') {
            if (_trim(percent).match(/%$/)) {
                return parseFloat(percent) / 100 * all;
            }

            return parseFloat(percent);
        }

        return percent == null ? NaN : +percent;
}

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