Function dataAPI

06.Router/basic/js/vue.js:8873–9045

(Vue)

  var filterRE$1 = /[^|]\|[^|]/;

  function dataAPI (Vue) {
    /**
     * Get the value from an expression on this vm.
     *
     * @param {String} exp
     * @param {Boolean} [asStatement]
     * @return {*}
     */

    Vue.prototype.$get = function (exp, asStatement) {
      var res = parseExpression(exp);
      if (res) {
        if (asStatement) {
          var self = this;
          return function statementHandler() {
            self.$arguments = toArray(arguments);
            var result = res.get.call(self, self);
            self.$arguments = null;
            return result;
          };
        } else {
          try {
            return res.get.call(this, this);
          } catch (e) {}
        }
      }
    };

    /**
     * Set the value from an expression on this vm.
     * The expression must be a valid left-hand
     * expression in an assignment.
     *
     * @param {String} exp
     * @param {*} val
     */

    Vue.prototype.$set = function (exp, val) {
      var res = parseExpression(exp, true);
      if (res && res.set) {
        res.set.call(this, this, val);
      }
    };

    /**
     * Delete a property on the VM
     *
     * @param {String} key
     */

    Vue.prototype.$delete = function (key) {
      del(this._data, key);
    };

    /**
     * Watch an expression, trigger callback when its
     * value changes.
     *