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getElementsByClassName("")兼容性問題!

getElementsByClassName("")兼容性問題!

19990000 2016-10-24 22:32:16
在IE里怎么獲取呢
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2 回答

?
慕瓜9220888

TA貢獻(xiàn)868條經(jīng)驗 獲得超0個贊

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反對 回復(fù) 2021-10-20
?
stone310

TA貢獻(xiàn)361條經(jīng)驗 獲得超191個贊

道理一樣,這是簡單版..

?function?getByClass(oParent,className){??????????????????????????????//從oParent里面搜尋className
?????var?arr=new?Array();
?????var?obj=oParent.getElementsByTagName("*")????????????????????????//從oParent里面調(diào)出所有tag
for(var?i=0;i<obj.length;i++){
???if?(obj[i].className==className){?????????????????????????????????????
??arr.push(obj[i])
???}
}
?????return?arr;
?}


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反對 回復(fù) 2016-10-25
  • 李曉健
    李曉健
    這個會有問題的,如果一個標(biāo)簽上有多個class,就掛了。
  • stone310
    stone310
    簡單版...做項目沒法用的,做測試可以用用
?
李曉健

TA貢獻(xiàn)1036條經(jīng)驗 獲得超461個贊

先獲取所有標(biāo)簽,然后循環(huán),看哪一個標(biāo)簽的className屬性中包含有你要先的那個class;

var?getElementsByClassName?=?function?(searchClass,?node,tag)?{
????if(document.getElementsByClassName){
????????var?nodes?=?(node?||?document).getElementsByClassName(searchClass),result?=?[];
????????for(var?i=0?;node?=?nodes[i++];){
????????????if(tag?!==?"*"?&&?node.tagName?===?tag.toUpperCase()){
????????????????result.push(node)
????????????}else{
????????????????result.push(node)
????????????}
????????}
????????return?result
????}else{
????????node?=?node?||?document;
????????tag?=?tag?||?"*";
????????var?classes?=?searchClass.split("?"),
????????????elements?=?(tag?===?"*"?&&?node.all)??node.all?:?node.getElementsByTagName(tag),
????????????patterns?=?[],
????????????current,
????????????match;
????????var?i?=?classes.length;
????????while(--i?>=?0){
????????????patterns.push(new?RegExp("(^|\s)"?+?classes[i]?+?"(\s|$)"));
????????}
????????var?j?=?elements.length;
????????while(--j?>=?0){
????????????current?=?elements[j];
????????????match?=?false;
????????????for(var?k=0,?kl=patterns.length;?k<kl;?k++){
????????????????match?=?patterns[k].test(current.className);
????????????????if?(!match)?break;
????????????}
????????????if?(match)?result.push(current);
????????}
????????return?result;
????}
}


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反對 回復(fù) 2016-10-24
  • 19990000
    19990000
    我要是寫IE網(wǎng)頁是不是先打上這樣一段話
  • 李曉健
    李曉健
    是的,這就是如果瀏覽器不支持的話,就自己去實(shí)現(xiàn)一個,如果支持就用瀏覽器自己的。
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