代码:
<script type="text/javascript" charset="utf-8">
// 伪数组(ArrayLike)
var jqObj = {
0: 'one',
1: 'two',
2: 'three',
length: 3
};
//数组
ary = ['one', 'two', 'three'];
// 将伪数组(ArrayLike)转成数组
function jqObjToArray(json){
var slice = Array.prototype.slice;
return slice.call(json, 0);
}
// 将数组转成伪数组(ArrayLike)
function ArrayToJqObj(ary){
var obj = {}, push = Array.prototype.push;
push.apply(obj, ary);
return obj;
}
console.log(jqObjToArray(jqObj));
console.log(ArrayToJqObj(ary));
</script>
return slice.call(json, 0); 输出["one","two","three"]
return slice.call(json, 1); 输出["two","three"]
这个他内部运行的原理??为什么 还有这个
push.apply(obj, ary);注 :不是问apply和call 个差别 这个就不用回答了!
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