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+# Functions
+
+```typescript
+type custom-property-name = `--${string}`
+type selector = string // Any css selector or identifier (used as id)
+type condition = string // empty string, 0, 'false', "'false'" and "\"false\"" are all false, the rest are fine. Don't ask.
+type duration = number | `${number}ms` | `${number}s`
+```
+
+## get-var
+Get css custom property from an element
+
+NOTE: Avoid using `var` inside cssx expressions.
+
+```typescript
+function get-var(custom-property-name): string
+function get-var(selector, custom-property-name): string
+```
+
+## update
+Update a css custom property on an element
+
+```typescript
+function update(custom-property-name, string): void
+function update(selector, custom-property-name, string): string
+```
+
+
+## js-eval
+Evaluate any js expression. Easy escape hatch into writing the worst code humanly possible.
+
+```typescript
+function js-eval(string): string
+```
+
+
+## if
+If expression. You know how this one goes. If truthy, it'll pick the second argument, else the third.
+
+```typescript
+function if(condition, any, any): any
+```
+
+
+## delay
+Wait a bit.
+
+```typescript
+function delay(duration): void
+```
+
+Examples for input -
+- `delay(100)`: wait for 100 milliseconds
+- `delay(100ms)`: wait for 100 milliseconds
+- `delay(5s)`: wait for 5 seconds
+- `delay(0.5s)`: wait for 500 milliseconds
+
+
+## load-cssx
+
+
+## set-attr
+
+
+## attr
+
+
+## prevent-default
+
+
+## request
+
+
+## add-children
+
+
+## remove-element
+
+
+## call-method
+
+
+## map
+
+
+## call
+
+
+## func
+
+