Kako uključiti JavaScript u web pregledniku

Danas gotovo sve web stranice u sebi sadrže JavaScript. To je programski jezik, koji se izvršava u web pregledniku. On web stranicama osigurava određene funkcionalnosti i ako je on iz nekog razloga onemogućen, može se dogoditi da određeni sadržaj ili njihova funkcionalnost bude ograničena ili nedostupna. Na ovoj stranici nalaze se upute kako uključiti (omogućiti) JavaScript u pet najčešće korištenih web preglednika.

Google Chrome Mozilla Firefox Apple Safari Opera Internet Explorer

U Tvome web pregledniku JavaScript je omogućen. Onemogućiš li ga ovaj tekst će se promijeniti.

Upute za web developere

Ako želiš možeš staviti link na ovu stranicu kako bi uputio one korisnike koji imaju isključen JavaScript kako da ga uključe u pet najčešće korištenih preglednika. Možeš slobodno koristiti kod koji se nalazi ispod i prilagođavati ga svojim potrebama.

<noscript>
 Za potpunu funkcionalnost ove stranice potrebno je uključiti JavaScript.
 Ovdje se nalaze <a href="https://www.enable-javascript.com/hr/">
 upute kako omogućiti JavaScript u tvom web pregledniku</a>
</noscript>

Korisnički doživljaj na enable-javascript.com optimiziramo koliko god možemo za one koji imaju isključen JavaScript:

• Upute za preglednik koji se trenutno koristi su na vrhu
• Sve slike su poredane u punoj veličini za jednostavan pregled
• Ova poruka namijenjena web developerima je pomaknuta.

Mi želimo da tvoji korisnici imaju uključen JavaScript isto kao što želiš i ti!

---

 Google Chrome

1. U izborniku web preglednika klikni na "Customize and control Google Chrome" i odaberi "Settings".
2. U sekciji "Settings" klikni na "Show advanced settings..."
3. Pod "Privacy" klikni na "Content settings...".
4. Kada se otvori dijaloški prozor, potraži "JavaScript" sekciju i odaberi "Allow all sites to run JavaScript (recommended)".
5. Klikni na "OK" gumb da se zatvori.
6. Zatvori karticu "Settings".
7. Klikni na gumb web preglednika za osvježavanje stranice "Reload this page".

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 Mozilla Firefox

1. U adresnoj traci napiši about:config i pritisni Enter.
2. Klikni "I'll be careful, I promise" ako se pojavi poruka upozorenja.
3. U polju za pretragu traži javascript.enabled
4. Prebaci "javascript.enabled" preferenciju (desni klik miša i odabir "Toggle" ili dvoklik na preference) da se vrijednost promijeni sa "false" na "true".
5. Klikni na gumb web preglednika za osvježavanje stranice "Reload current page".

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 Apple Safari

1. U izborniku web preglednika klikni na "Edit" i odaberi "Preferences".
2. U prozoru "Preferences" odaberi "Security" karticu.
3. Na "Security" kartici pod stavkom "Web content" stavi kvačicu ispred "Enable JavaScript" potvrdnog okvira.
4. Klikni na gumb web preglednika za osvježavanje stranice "Reload the current page".

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 Opera

• 1. Klikni na Operinu ikonicu "Menu" i nakon toga "Settings".
• 2. Klikni na "Websites" i nakon toga odaberi "Allow all sites to run JavaScript (recommended)"
• 3. Klikni na gumb web preglednika za osvježavanje stranice "Reload".

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 Internet Explorer

1. U izborniku web preglednika klikni na \"Tools\" i odaberi "Internet Options".
2. U prozoru "Internet Options" odaberi "Security" karticu.
3. Na "Security" kartici klikni na gumb "Custom level...".
4. Kada se otvori dijaloški prozor "Security Settings - Internet Zone" potraži sekciju "Scripting".
5. Pod stavkom "Active Scripting" odaberi "Enable".
6. Kada iskoči "Warning!" upozorenje "Are you sure you want to change the settings for this zone?" odaberi "Yes".
7. U prozoru "Internet Options" koji je ostao otvoren klikni na gumb "OK" i on će se zatvoriti.
8. Klikni na gumb web preglednika za osvježenje stranice "Refresh".

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How to enable JavaScript in your browser and why ?

 

How to enable JavaScript in your browser

Nowadays almost all web pages contain JavaScript, a scripting programming language that runs on visitor's web browser. It makes web pages functional for specific purposes and if disabled for some reason, the content or the functionality of the web page can be limited or unavailable. Here you can find instructions on how to enable (activate) JavaScript in five most commonly used browsers.

Google Chrome Mozilla Firefox Apple Safari Opera Internet Explorer

Javascript is enabled in your web browser. If you disable JavaScript, this text will change.

Instructions for web developers

You may want to consider linking to this site, to educate any script-disabled users on how to enable JavaScript in five most commonly used browsers. You are free to use the code below and modify it according to your needs.

<noscript>
 For full functionality of this site it is necessary to enable JavaScript.
 
 instructions how to enable JavaScript in your web browser</a>.
</noscript>

On enable-javascript.com we optimize the script-disabled user experience as much as we can:

• The instructions for your browser are put at the top of the page
• All the images are inlined, full-size, for easy perusing
• This developer-centric message is out of the way.

We want your visitors to have JavaScript enabled just as much as you do!

---

 Google Chrome

1. On the web browser menu click on the "Customize and control Google Chrome" and select "Settings".
2. In the "Settings" section click on the "Show advanced settings..."
3. Under the the "Privacy" click on the "Content settings...".
4. When the dialog window opens, look for the "JavaScript" section and select "Allow all sites to run JavaScript (recommended)".
5. Click on the "OK" button to close it.
6. Close the "Settings" tab.
7. Click on the "Reload this page" button of the web browser to refresh the page.

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 Mozilla Firefox

1. In the address bar, type about:config and press Enter.
2. Click "I'll be careful, I promise" if a warning message appears.
3. In the search box, search for javascript.enabled
4. Toggle the "javascript.enabled" preference (right-click and select "Toggle" or double-click the preference) to change the value from "false" to "true".
5. Click on the "Reload current page" button of the web browser to refresh the page.

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 Apple Safari

1. On the web browser menu click on the "Edit" and select "Preferences".
2. In the "Preferences" window select the "Security" tab.
3. In the "Security" tab section "Web content" mark the "Enable JavaScript" checkbox.
4. Click on the "Reload the current page" button of the web browser to refresh the page.

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 Opera

• 1. Click on Opera icon "Menu" and than "Settings".
• 2. Click on "Websites" and then choose "Allow all sites to run JavaScript (recommended)"
• 3. Click on the "Reload" button of the web browser to refresh the page.

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 Internet Explorer

1. On web browser menu click "Tools" and select "Internet Options"
2. In the "Internet Options" window select the "Security" tab.
3. On the "Security" tab click on the "Custom level..." button.
4. When the "Security Settings - Internet Zone" dialog window opens, look for the "Scripting" section.
5. In the "Active Scripting" item select "Enable".
6. When the "Warning!" window pops out asking "Are you sure you want to change the settings for this zone?" select "Yes".
7. In the "Internet Options" window click on the "OK" button to close it.
8. Click on the "Refresh" button of the web browser to refresh the page.

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About

High Demand Skills: JavaScript Key Existence Validation for Web Developers

 Title: Elevate JavaScript Performance: Mastering Key Existence Validation Techniques

Javascript tutorial for beginners

Introduction: JavaScript is the backbone of modern web development, empowering interactive and dynamic user experiences. However, optimizing JavaScript code is crucial for maintaining high performance, especially when handling extensive datasets or frequent data manipulations. One pivotal task is checking if a key exists in an object or map, essential for error prevention and smooth code execution. In this article, we delve into advanced techniques for efficient key existence validation.

Understanding the Problem: Before exploring solutions, it's vital to grasp the importance of checking key existence in JavaScript. Objects and maps, primary data structures, store key-value pairs. Validating key existence is critical to avoid runtime errors like undefined or null references. Handling this check efficiently significantly impacts code performance, especially in scenarios involving large datasets or repetitive operations.

Optimized Techniques:

1. Leveraging the 'in' Operator: The 'in' operator swiftly confirms the presence of a key within an object or its prototype chain. It returns true if the specified property exists, preventing runtime errors. Here's a simple implementation:

javascript
const obj = { key: 'value' };
if ('key' in obj) {
   console.log('Key exists!');
}

2. Utilizing the has() Method for Maps: Maps offer the 'has()' method dedicated to key existence checks. This method efficiently confirms key presence, enhancing code reliability. Example usage:

javascript
const map = new Map();
map.set('key', 'value');
if (map.has('key')) {
   console.log('Key exists!');
}

3. Employing the 'hasOwnProperty()' Method: For objects, 'hasOwnProperty()' validates property existence without traversing the prototype chain. It returns true if the property exists, ensuring robust code execution. Example usage:

javascript
const obj = { key: 'value' };
if (obj.hasOwnProperty('key')) {
   console.log('Key exists!');
}

Conclusion: Efficiently validating key existence in JavaScript objects or maps is paramount for code reliability and performance. By employing advanced techniques such as the 'in' operator, 'has()' method, and 'hasOwnProperty()' method, developers can ensure smooth execution and prevent runtime errors effectively.