JS处理相对路径

遇到引擎不能处理相对路径的问题，写了一个简单的相对路径转绝对路径的函数，留下备用：



function rel2Abs(path) {
    var _path = path;
    var locationStr = location.href.toString();
    console.log(locationStr);
    var result = '';

    var relative;
    while (relative = _path.substring(0, _path.indexOf("\/"))) {
        console.log(relative);
        if (relative === '.') {
            // 遇到. path去掉最前面的./
            // 遇到.当前路径去掉/后面内容
            _path = _path.substring(_path.indexOf('\/') + 1, _path.length);
            locationStr = locationStr.substring(0, locationStr.lastIndexOf('\/') + 1);
        } else if (relative === '..') {
            // 遇到.. path去掉最前面的../
            // 遇到.. 当前路径去掉/xxx,然后再去掉/后面的内容
            _path = _path.substring(_path.indexOf('\/') + 1, _path.length);
            locationStr = locationStr.substring(0, locationStr.lastIndexOf('\/'));
            locationStr = locationStr.substring(0, locationStr.lastIndexOf('\/') + 1);
        } else {
            break;
        }
    }
    var result = locationStr + _path;
    path = result;
    return result;
}

原理很简单，只支持/，且遇到错误不能自动处理