html js dom 操作_张圣晨的博客

查找 dom

var input = document.getElementById("user_id");
var input = document.getElementsByName("user_name");
var inputs = document.getElementsByClassName("user_class");
var inputs = document.getElementsByTagName("input");
var inputs = document.querySelectorAll("input.chooseCheckbox");

// dom 在html中通过 this 传递
<input id="user_id" onclick="doit(this)" />
function doit (obj) {
    obj  ===  document.getElementById("user_id")
}
var input = document.get