Function setPath

06.Router/basic/js/vue.js:2763–2801

* Set on an object from a path * * @param {Object} obj * @param {String | Array} path * @param {*} val

(obj, path, val)

   */

  function setPath(obj, path, val) {
    var original = obj;
    if (typeof path === 'string') {
      path = parse(path);
    }
    if (!path || !isObject(obj)) {
      return false;
    }
    var last, key;
    for (var i = 0, l = path.length; i < l; i++) {
      last = obj;
      key = path[i];
      if (key.charAt(0) === '*') {
        key = parseExpression(key.slice(1)).get.call(original, original);
      }
      if (i < l - 1) {
        obj = obj[key];
        if (!isObject(obj)) {
          obj = {};
          if ('development' !== 'production' && last._isVue) {
            warnNonExistent(path, last);
          }
          set(last, key, obj);
        }
      } else {
        if (isArray(obj)) {
          obj.$set(key, val);
        } else if (key in obj) {
          obj[key] = val;
        } else {
          if ('development' !== 'production' && obj._isVue) {
            warnNonExistent(path, obj);
          }
          set(obj, key, val);
        }
      }
    }
    return true;
  }

var path = Object.freeze({
    parsePath: parsePath,