本文介绍了将变量从Swift传递到javascript函数的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
使用JSContext将变量传递给javascript函数时遇到麻烦.错误显示stringToSend未定义:
Having trouble using JSContext to pass a variable to a javascript function. The error says stringToSend is undefined:
func sendSomething(stringToSend : String) {
appController?.evaluateInJavaScriptContext({ (context) -> Void in
context.evaluateScript("myJSFunction(stringToSend)")
}, completion: { (evaluated) -> Void in
print("we have completed: \(evaluated)")
})
}
推荐答案
这是我喜欢从Swift到Java进行通信的方式:
Here is how I like to communicate from Swift to Javascript:
func sendSomething(stringToSend : String) {
appController?.evaluateInJavaScriptContext({ (context) -> Void in
//Get a reference to the "myJSFunction" method that you've implemented in JavaScript
let myJSFunction = evaluation.objectForKeyedSubscript("myJSFunction")
//Call your JavaScript method with an array of arguments
myJSFunction.callWithArguments([stringToSend])
}, completion: { (evaluated) -> Void in
print("we have completed: \(evaluated)")
})
}
在调用此方法时，请确保在您的JavaScript上下文中实现了 myJSFunction .
Make sure myJSFunction is implemented in your javascript context when you call this method.
使用 callWithArguments 时，您的 stringToSend 字符串将自动映射到javascript字符串.
Your stringToSend String will automatically be mapped to a javascript string when using callWithArguments.
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