问题:Function对象的length是干嘛的?
------------ 函数期望的参数个数。
举例:
function test1(num){ //... } function test2(){ //... } console.log(test1.length); //1 console.log(test2.length); //0
问题:Function对象的length是干嘛的?
------------ 函数期望的参数个数。
举例:
function test1(num){ //... } function test2(){ //... } console.log(test1.length); //1 console.log(test2.length); //0
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