如果未定义,js将覆盖console.log

Question

你推荐哪种解决方案,第二种更简单(代码更少),但使用它有缺点吗？

第一:(设置全局调试标志)

// the first line of code
var debug = true;
try {
    console.log
} catch(e) {
    if(e) {
        debug=false;
    }
};
// Then later in the code
if(debug) {
    console.log(something);
}

第二: 覆盖console.log

try {
    console.log
} catch(e) {
    if (e) {
        console.log = function() {}
    }
};
// And all you need to do in the code is
console.log(something);

Answer 1

两者都不是,而是第二种的变种.丢失try...catch并正确检查控制台对象是否存在:

if (typeof console == "undefined") {
    window.console = {
        log: function () {}
    };
}

console.log("whatever");

Answer 2

或者,在coffeescript中:

window.console ?=
    log:-> #patch so console.log() never causes error even in IE.