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<title>1.6.1_函数的属性length</title>

<meta name="author" content="cshuig" />

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<script type="text/javascript">

/*函数的属性与函数的内部属性不同*/

function fn1(){

}

function fn2(num1){

}

function fn3(num1,num2){

}

//函数的length就表示该函数所期望的参数个数

alert(fn1.length);

alert(fn2.length);

alert(fn3.length);

</script>

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