Javascript:获取id为log_XXXX的所有对象

Question

我需要获取id与特定模式匹配的所有对象.我该怎么做？谢谢!

Answer 1

现代浏览器:(IE9 +)

//slice turns the resulting DOM collection into a proper array
var matches = [].slice.call(document.querySelectorAll('[id^=log_]'));

jQuery的:

$('[id^=log_]')

旧浏览器,没有jQuery:

var matches = [];
var elems = document.getElementsByTagName("*");
for (var i=0; i<elems.length; i++) {
  if (elems[i].id.indexOf("log_") == 0)
    matches.push(elems[i]);
}
//matches now is an array of all matching elements.