Avoid Negative Conditionals
Negatives are harder to understand. Conditional functions should be expressed as positives every time.
☑️ Topic: Functions
☑️ Idea: Negatives are harder to understand. Conditional functions should be expressed as positives every time.
☑️ Benefits: Readability
☑️ Guideline: Function names should not have “not” in their name. Use the “not” Boolean operator with the function call instead.
// BAD
function isDOMNodeNotPresent(node) {
// ...
}
if (!isDOMNodeNotPresent(node)) {
// ...
}
// GOOD
function isDOMNodePresent(node) {
// ...
}
if (isDOMNodePresent(node)) {
// ...
}// BAD
function isDOMNodeNotPresent(node) {
// ...
}
if (!isDOMNodeNotPresent(node)) {
// ...
}
// GOOD
function isDOMNodePresent(node) {
// ...
}
if (isDOMNodePresent(node)) {
// ...
}