javascript - javascript不显示警报

此代码未向我显示警报：-

<script type="text/javascript">
var wloc = window.parent.location;
var abcd = wloc.substring(0,24);
alert(wloc);
alert(abcd);
</script>

最佳答案

确保您的脚本有权访问parent。然后按如下所示修改脚本

<script type="text/javascript">
window.onload = function(){
    var wloc = window.parent.location.href;
    var abcd = wloc.substring(0,24);
    alert(wloc);
    alert(abcd);
}
</script>

有关当前窗口的位置，请尝试以下脚本

<script type="text/javascript">
window.onload = function(){
    var wloc = window.location.href;
    var abcd = wloc.substring(0,24);
    alert(wloc);
    alert(abcd);
}
</script>