How are the grades computed?
The grades for individual rules are computed differently depending on the rule. For example, for Rule 1, three external scripts are allowed. For each script above that, four points are deducted from the grade. The code for grading each rule is found in lint.js. The overall grade is a weighted average of the individual grades for each rule. The rules are approximately in order of importance, most important first. The specific weights are in the lintweights array in yslowcontext.js.
The grades for individual rules are computed differently depending on the rule. For example, for Rule 1, three external scripts are allowed. For each script above that, four points are deducted from the grade. The code for grading each rule is found in rules.js. The overall grade is a weighted average of the individual grades for each rule, calculated in controller.js The rules are approximately in order of importance, most important first. The specific weights are in the ruleset objects in rules.js. Rule weights of YSlow V2 Ruleset.
