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如何使用 JavaScript 获得元素/ 组件名称?
原标题:How to get element/component name using JavaScript?

我有一个网页,里面有ASP.NET板和JavaScript, 里面有网页上的所有内容:

var items = Sys.Application.getComponents();

我需要获得项目变量中每个元素的名称/ ID 。 我尝试了以下代码 :( 但它不起作用 )

for (var item in items) 
{
      alert(item.name);
}

名称/ ID 包含项目属性是什么? 我如何修改上述代码来做到这一点?

最佳回答

代之以使用 get_name () get_id () 函数 。

var items = Sys.Application.getComponents() ;
for( var i = 0 ; i < items.length; i++ ) {
    var item = items[i];
    var id   = item.get_id();
    var name = item.get_name();
}

http://ajax.asp.net/docs/ClientReference/Sys/ApplicationClass/SysApplicationGetComponents Method.aspx" rel=“nofollow'>http://ajax.asp.net/docs/ClientReference/Sys/ApplicationClass/SysApplicationGetcompentsMethod.aspx

问题回答

无。 item is the key/ property 所以您想要 items[item].name

但是,如果 items 是一个数组, 使用 for. in 进行循环处理是完全不适当的。 在此情况下, 使用 for( var i= 0; i< items. larth; i++) var ites= items[i] 在环体内使用 < code> for( var i= 0; i< items. plan; i++) 和 var ite= itets[i]





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