valueof方法是干嘛的 javascript中valueOf()方法的用法?
javascript中valueOf()方法的用法?Return本身原始值的2113倍<script> a=1 b=“1”函數(shù)c(){}d=new array(1,2)alert(a.valu
javascript中valueOf()方法的用法?
Return本身原始值的2113倍<script> a=1 b=“1”函數(shù)c(){}d=new array(1,2)alert(a.valueof())//Return 1 alert(b.valueof())//Return character 1 alert(c.valueof())//Return函數(shù)本身5261 alert(d.valueof())//Return array</script>用于轉(zhuǎn)換4102對1653個圖像轉(zhuǎn)換為原始類型的值。示例:<script> var a=New String(“ABC”)//an object var B=“ABC”//an original value String var C=a.valueof()//如果(typeof(a)==typeof(B)){alert(“a等于B”)否則{alert(“a不等于B”)}如果(typeof(B)==typeof(C)){alert(“B等于C”)}</腳本(>)