WKWebView注入VConsole.js

1.VConsoleInit.js

//VConsoleInit.js

var a = function run() {
var head = document.getElementsByTagName('head')[0];
var scripts = head.getElementsByTagName('script');
var found = 0;
for (var i = 0; i < scripts.length; i++) {
if (scripts[i].src == "https://unpkg.com/vconsole/dist/vconsole.min.js") {
found = 1;
console.log("have found vconsole script");
break
}
}
if (found == 0) {
console.log("add vconsole script");
var tr = document.createElement("script");
tr.src = "https://unpkg.com/vconsole/dist/vconsole.min.js";
head.appendChild(tr)
} else {
console.log("not add vconsole script")
}
}();　

2.VConsoleAdd.js

//VConsoleAdd.js

var b = function run() {
var head = document.getElementsByTagName('head')[0];
var scripts = head.getElementsByTagName('script');
var found = 0;
for (var i = 0; i < scripts.length; i++) {
if (scripts[i].innerHTML == "var vConsole = new window.VConsole();") {
found = 1;
console.log("have found vconsole object");
break
}
}
if (found == 0) {
console.log("add vconsole object");
var tb = document.createElement("script");
tb.type = "text/javascript";
tb.innerHTML = "var vConsole = new window.VConsole();";
head.appendChild(tb)
} else {
console.log("not add vconsole object")
}
}();

 3.注入远程JS

    //远程加载VConsole.js
    NSString *path = [[NSBundle mainBundle] pathForResource:@"VConsoleInit" ofType:@"js"];
    NSString *jsCode = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:&error];
    if (!error) {
        [self.contentWebView evaluateJavaScript:jsCode completionHandler:^(id data, NSError *  error) {
            if(error){
                NSLog(@"error:%@",[error description]);
            }
        }];
    } else {
        NSLog(@"error %@",error);
    }

4.注入控制台

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        NSError *error = nil;
        NSString *path = [[NSBundle mainBundle] pathForResource:@"VConsoleAdd" ofType:@"js"];
        NSString *jsCode = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:&error];
if (!error) {
            [self.contentWebView evaluateJavaScript:jsCode completionHandler:^(id data, NSError *  error) {
                if(error){
                    NSLog(@"error:%@",[error description]);
                }
            }];
        } else {
            NSLog(@"error %@",error);
        }
    });