bind, call, apply demo

bind-call-apply-demo.js

function nonbinded(para, para2, para3) {
  console.log('this:', this);
  console.log('para:', para, para2, para3);
}

console.log('Call,Appy,Bind ==============');

console.log('nonbinded()----------------');
nonbinded('test-para', 'test-para2', 'test-para3');

console.log('.call()----------------');
nonbinded.call('test-this-call','test-para-call', 'test-para2-call', 'test-para3-call');

console.log('.apply()----------------');
nonbinded.apply('test-this-apply',['test-para-apply', 'test-para2-apply', 'test-para3-apply']);

console.log('.bind()----------------');
var binded = nonbinded.bind('test-this-bind');
binded('test-para-bind', 'test-para2-bind', 'test-para3-bind');

console.log('Call,Apply,Bind Event ==============');
document.addEventListener('click',nonbinded);
document.addEventListener('click',binded);

console.log('==============');