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Ramesh Ramalingam rrameshbtech

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  • ThoughtWorks
  • Coimbatore, India
  • 08:00 (UTC +05:30)
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@rrameshbtech
rrameshbtech / default-bindings-gobal.js
Last active July 25, 2018 16:13
JavaScript-Magic Words:this
var city = 'Karur';
console.log(this.city); // Karur
console.log(city); //Karur
@rrameshbtech
rrameshbtech / default-binding-this-nodejs.js
Last active July 30, 2018 09:16
How this works in nodes global
(function (exports, require, module, __filename, __dirname) {
//****Your code starts here****//
var city = 'Karur';
console.log(this.city); // undefined
console.log(city); //Karur
//****Your code ends here****//
});
var args = [self.exports, require, self, filename, dirname];
return compiledWrapper.apply(self.exports, args);
@rrameshbtech
rrameshbtech / default-binding-this-functions.js
Last active July 30, 2018 09:09
var slang = 'Kongu';
function printSlang() {
console.log(this.slang); // Kongu
}
printSlang();
@rrameshbtech
rrameshbtech / default-this-equals.js
Last active July 25, 2018 17:25
// Run it in Browser
function thisInBrowser() {
console.log(this === window); // true
}
thisInBrowser();
//Run it in Node.js
function thisInNodeJS() {
console.log(this === global); // true
}
@rrameshbtech
rrameshbtech / object-binding-this.js
Last active July 30, 2018 09:22
let manchesterOfSouthIndia = {
city: 'Coimbatore',
speciality: 'cotton industries',
getSpeciality: function() {
return this.city + ' is known for ' + this.speciality;
}
}
console.log(manchesterOfSouthIndia.getSpeciality()); // Coimbatore is known for cotton industries
@rrameshbtech
rrameshbtech / object-bindings-this-assigned-function.js
Last active July 27, 2018 01:38
let manchesterOfSouthIndia = {
city: 'Coimbatore',
speciality: 'mechanical industries',
}
manchesterOfSouthIndia.getSpeciality = function() {
return this.city + ' is known for ' + this.speciality;
}
console.log(manchesterOfSouthIndia.getSpeciality()); // Coimbatore is known for mechanical industries
@rrameshbtech
rrameshbtech / explicit-binding-this.js
Last active July 30, 2018 09:21
Explicit binding of this using call & apply
const siliconVallyOfIndia = {
city: 'Bengaluru',
speciality: 'software industries'
};
const texCity = {
city: 'Tiruppur',
speciality: 'textile industries'
};
@rrameshbtech
rrameshbtech / hard-binding-this.js
Created July 30, 2018 01:34
function printSpeciality() {
console.log(`${this.city} is know for ${this.speciality}`);
}
const printKarurSpeciality = printSpeciality.bind({city: 'Karur', speciality: 'Textile Industries'});
printKarurSpeciality(); // Karur is know for Textile Industries
const printCoimbatoreSpeciality = printSpeciality.bind({city: 'Coimbatore', speciality: 'Mechanical Industries'});
printCoimbatoreSpeciality(); // Coimbatore is know for Mechanical Industries
@rrameshbtech
rrameshbtech / dom-event-this-bindings.html
Created July 30, 2018 03:16
<html>
<button id="thisButton">Check this</button>
<script>
const thisButton = document.getElementById('thisButton');
thisButton.addEventListener('click', verifyThis);
function verifyThis(event) {
//this is bound to the button onwhich the click event is triggered
console.log(this === thisButton); // true
console.log(this === event.currentTarget); // true
@rrameshbtech
rrameshbtech / dom-inline-binding-this.html
Last active July 30, 2018 03:47
<html>
<button id="thisButton" onclick="verifyThis(this)">Check this</button>
<script>
const thisButton = document.getElementById('thisButton');
function verifyThis(buttonWhichTriggered) {
console.log(buttonWhichTriggered === thisButton); // true
console.log(this === window); // true
}
</script>