jsxcond

JSXCOND

Installation

npm install jsxcond --save

Usage

if-else-then

_if (TEST_FORM, THEN_FORM, [ELSE_FORM])

• Common Usage

import React from 'react';
import { _if } from 'jsxcond'

class SomeComponent extends React.Component {
  render() {
    const condition = true;
    <div>
      {_if ( condition, () => (
        <span>
          condition is true
        </span>
      ), () => (
        <span>
          condition is false
        </span>
      ))}
    </div>
  }
}

• Only if, no else

import React from 'react';
import { _if } from 'jsxcond'

class SomeComponent extends React.Component {
  render() {
    const condition = true;
    <div>
      {_if ( condition, () => (
        <span>
          condition is true
        </span>
      ))}
    </div>
  }
}

• TEST_FORM can be a function

import React from 'react';
import { _if } from 'jsxcond'

class SomeComponent extends React.Component {
  render() {
    const condition = true;
    <div>
      {_if ( () => {
        return true
      }, () => (
        <span>
          condition is true
        </span>
      ), () => (
        <span>
          condition is false
        </span>
      ))}
    </div>
  }
}

• Recommend using () => () to have lazy eval(). However THEN_FORM and ELSE_FORM are still supported.

import React from 'react';
import { _if } from 'jsxcond'

class SomeComponent extends React.Component {
  render() {
    const condition = true;
    <div>
      {_if ( condition, 'condition is true', (
        <span>
          condition is false
        </span>
      ))}
    </div>
  }
}

cond

if-else-then

_cond (STATEMENT1, STATEMENT2...)

STATEMENT can be array, function, common value:

• When it is a value, it will be returned immediately.

• When it is a function, it will be evaluated and returned immediately.

• When it is a array, the first value will be used as TEST_FORM, and the second will be used as THEN_FORM.

• Common Usage

import React from 'react';
import { _cond } from 'jsxcond'

class SomeComponent extends React.Component {
  render() {
    const condition = 3
    <div>
      {_cond (
        [condition === 1, () => (
          <span>
            condition is 1
          </span>
        )],
        [condition === 2 , () => (
          <span>
            condition is 2
          </span>
        )], () => (
          <span>
            Otherwise
          </span>
        )}
    </div>
  }
}

• TEST_FORM can be a function

import React from 'react';
import { _cond } from 'jsxcond'

class SomeComponent extends React.Component {
  const condition = 3;
  render() {
    <div>
      {_cond (
        [
          () => {
            return condition === 1
          }, () => (
            <span> condition is 1 </span>
          )
        ],
        [
          () => {
            return condition === 2
          }, () => (
            <span> condition is 2 </span>
          )
        ]
      )}
    </div>
  }
}

License

MIT