Javascript : get all the object where id is like log_XXXX

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

当前浏览器:

// DOM collection as proper array
const matches = Array.from(document.querySelectorAll('[id^=log_]'));

---

旧版浏览器:(IE9+)

// Use Array.prototype.slice to turn the DOM collection into a proper array
var matches = [].slice.call(document.querySelectorAll('[id^=log_]'));

---

jQuery:

$('[id^=log_]')

---

真正的旧浏览器，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.