我有以下代码用于创建各种微型库(类似于JQuery,但只有我需要的东西)。
window.$ = function(selector, context, undefined)
{
var getSelectorTest = function(selector, context, undefined)
{
var el;
var selector_key = selector.slice(0, 1),
matches = {
'#': 'getElementById',
'.': 'getElementsByClassName',
'@': 'getElementsByName',
'=': 'getElementsByTagName',
'*': 'querySelectorAll'
}[selector_key],
selector_value = selector.slice(1);
//add fallback for getElementsByClassName is not supported e.g. IE8
if(matches === 'getElementsByClassName' && !document.getElementsByClassName)
{
matches = 'querySelectorAll';
selector_value = selector;
}
// now pass the selector without the key/first character
el = (((context === undefined) ? document: context)[matches](selector_value));
return el;
};
var elem = getSelectorTest(selector, context, undefined);
//Extend elem before returning it
elem.attr = function(name, value) {
if(value)
{
this.setAttribute(name, value);
return this;
}
else
{
return this.getAttribute(name);
}
return elem;
};
然后当我运行以下代码时:
<script>
domReady(function(){ //https://github.com/cms/domready
var el_1 = $('#container-1');
el_1.attr("data-test", "random_value");
});
</script>
使用IE8时我得到以下信息:
<div id="container-1" attr="function(name, value) {
if(value)
{
this.setAttribute(name, value);
return this;
}
else
{
return this.getAttribute(name);
}
}" data-test="random_value">
当然,当我使用Chrome和Firefox时,情况并非如此(我得到预期的输出,即<div id="container-1" data-test="random_value">
)。我该如何解决这个问题?
注意:我正在使用&#39; HTML&#39; IE8开发者工具(F12)的选项卡来验证这一点。
答案 0 :(得分:0)
不是将attr()
函数附加到所选元素(IE8显然将其解释为在元素本身上设置属性),您可能会更好地将其附加到Element
对象的原型。
Element.prototype.attr = function(name,value){ ...