問題描述

我正在嘗試遍歷一個元素并獲取該元素的所有屬性以輸出它們，例如，一個標(biāo)簽可能有 3 個或更多屬性，我不知道，我需要獲取這些屬性的名稱和值.我的想法是這樣的:

$(this).attr().each(function(index, element) {var name = $(this).name;var 值 = $(this).value;//用名稱和值做一些事情...});

誰能告訴我這是否可行，如果可行，正確的語法是什么?

attributes 屬性包含所有這些:

$(this).each(function() {$.each(this.attributes, function() {//this.attributes 不是一個普通的對象，而是一個數(shù)組//屬性節(jié)點(diǎn)，包含名稱和值如果(this.specified){console.log(this.name, this.value);}});});

<小時>

您還可以做的是擴(kuò)展 .attr 以便您可以像 .attr() 一樣調(diào)用它來獲取所有屬性的普通對象:

(函數(shù)(舊) {$.fn.attr = 函數(shù)() {if(arguments.length === 0) {如果(this.length === 0){返回空值；}變量 obj = {};$.each(this[0].attributes, function() {如果(this.specified){obj[this.name] = this.value;}});返回對象；}返回 old.apply(this, arguments);};})($.fn.attr);

用法:

var $div = $("

I am trying to go through an element and get all the attributes of that element to output them, for example an tag may have 3 or more attributes, unknown to me and I need to get the names and values of these attributes. I was thinking something along the lines of:

$(this).attr().each(function(index, element) {
    var name = $(this).name;
    var value = $(this).value;
    //Do something with name and value...
});

Could anyone tell me if this is even possible, and if so what the correct syntax would be?

The attributes property contains them all:

$(this).each(function() {
  $.each(this.attributes, function() {
    // this.attributes is not a plain object, but an array
    // of attribute nodes, which contain both the name and value
    if(this.specified) {
      console.log(this.name, this.value);
    }
  });
});

(function(old) {
  $.fn.attr = function() {
    if(arguments.length === 0) {
      if(this.length === 0) {
        return null;
      }

      var obj = {};
      $.each(this[0].attributes, function() {
        if(this.specified) {
          obj[this.name] = this.value;
        }
      });
      return obj;
    }

    return old.apply(this, arguments);
  };
})($.fn.attr);

var $div = $("<div data-a='1' id='b'>");
$div.attr();  // { "data-a": "1", "id": "b" }