js判断浏览器是否开启调试模式

function isDebugMode() {
    let threshold = 100;
    let start = performance.now();
    console.log('');
    let end = performance.now();
    return end - start > threshold;
}

if (isDebugMode()) {
    console.log('调试模式已开启');
} else {
    console.log('调试模式未开启');
}

function isDevToolsOpen() {
    const threshold = 100;
    let widthThreshold = window.outerWidth - window.innerWidth > threshold;
    let heightThreshold = window.outerHeight - window.innerHeight > threshold;

    return widthThreshold || heightThreshold;
}

if (isDevToolsOpen()) {
    console.log('调试模式已开启');
} else {
    console.log('调试模式未开启');
}

function detectDebugMode() {
    let detected = false;
    try {
        debugger;
        detected = true;
    } catch (e) {
        detected = false;
    }
    return detected;
}

if (detectDebugMode()) {
    console.log('调试模式已开启');
} else {
    console.log('调试模式未开启');
}