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跳过JavaScript中的参数_Javascript - Fatal编程技术网
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跳过JavaScript中的参数

javascript

跳过JavaScript中的参数,javascript,Javascript,我如何调用这个函数将只调用第二个参数？换句话说，我希望a是未定义的 function my_func(a, b){ if(typeof(a) !== 'undefined'){ // do stuff } return b; } my_func(undefined, b);

我如何调用这个函数将只调用第二个参数？换句话说，我希望a是未定义的

function my_func(a, b){
    if(typeof(a) !== 'undefined'){
        // do stuff
    }

    return b;
}

my_func(undefined, b);