Including jQuery library in JavaScriptCore

Question

I am trying to use jQuery functions in JavaScriptCore, so I have executed the jQuery library as a script in my JSContext. However, after I do that, I still can't access any jQuery functions. Here's a stripped-down version of my code in a Xcode playground:

import JavaScriptCore
let context = JSContext()

//Evaluate JQuery library in context:
do {
let libString = try String(contentsOf: URL(string: "http://code.jquery.com/ui/1.9.2/jquery-ui.js")!, encoding: .utf8)
context?.evaluateScript(libString)
} catch (let error) {
    print("Error while processing URL: \(error)")
}

//Access variables defined by JQuery library:
 print("'$' in context is defined as: \(context?.objectForKeyedSubscript("$"))")
 print("'jQuery' in context is defined as: \(context?.objectForKeyedSubscript("jQuery"))")

This prints:

'$' in context is defined as: Optional(undefined)

'jQuery' in context is defined as: Optional(undefined)

If I had included the library correctly, those would be defined as functions. What have I done wrong? Should I even be using JavaScriptCore to gain jQuery functionality?

Possible duplicate of How to include a external library in JavaScriptCore? — Vaishal Patel
– Vaishal Patel, Commented Mar 23, 2017 at 7:41

Solomiya · Accepted Answer · 2018-04-19 17:17:09Z

-1

You should include jQuery library:

NSString *commond = @"window.onload=function(){var jq=document.createElement(\"script\");jq.setAttribute(\"src\",\"https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superman/js/lib/jquery-1.10.2.js\");document.getElementsByTagName(\"head\")[0].appendChild(jq);window.setTimeout(\"exec()\",1000)};function exec(){document.write($(\"body\").get(0))};";

[self.webView stringByEvaluatingJavaScriptFromString:commond];

edited Apr 19, 2018 at 17:17

Solomiya

3204 silver badges16 bronze badges

answered Nov 22, 2017 at 14:50

Amos_

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2 Comments

Nic3500 Over a year ago

Format your answer properly using the editing hints. This should be highlighted as code. Then explain why this code answers the question and how it solves the problem.

Timur Suleimanov Over a year ago

The question was about JavaScriptCore, not WebView.

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