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javascript impor export 小例子

function onlyNum(event) {         if(!(event.keyCode==46)&&!(event.keyCode==8)&&!(event.keyCode==37)&&!(event.keyCode==39))    if(!((event.keyCode>=48&&event.keyCode=96&&event.keyCode     

字母和数字键的键码值(keyCode)按键键码按键键码按键键码按键键码A65J74S83149B66K75T84250C67L76U85351D68M77V86452E69

function.apply(thisobj, args)thisobj: The object to which function is to be applied. In the body of the function, thisobj becomes the value of the this keyword. If this argument is null, the global

提供了计算等额本息法和等额本金法来计算房贷还款在某月的本金，利息等相关信息