我在HTML页面上有一系列复选框,我想根据相应的HTML查询字符串参数检查复选框。
e.g。
...path/page.html?i=1&j=1&x=0
会导致带有三个复选框的页面在加载时检查1和2。
有人可以告诉我如何做到这一点,或者指出我的方向是合适的教程吗?
非常感谢,
编辑:澄清,我,j和x刚刚从头顶挑选,但它们是布尔变量(1 =真,0 =假),每个对应一个复选框,所以:
i = one checkbox, the value in the example is 1, so the checkbox should be checked.
j = as above
x = one checkbox, the value in the example is 0, so the checkbox should not be checked.
答案 0 :(得分:2)
部分来自W3Schools。此文件会创建一个复选框并根据http://example.com/index.html?j= ?网址
进行检查<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<script type="text/javascript">
function getUrlVars()
{
var vars = [], hash;
var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for(var i = 0; i < hashes.length; i++)
{
hash = hashes[i].split('=');
vars.push(hash[0]);
vars[hash[0]] = hash[1];
}
return vars;
}
function doStuff()
{
var GETVars = getUrlVars();
if (GETVars['j']==1)
{
document.getElementById("myCheck").checked=true;
}
}
</script>
<body onload="doStuff();">
<form>
<input id='myCheck' type="checkbox" />
</form>
</body>
</html>
答案 1 :(得分:2)
function decode(s) {
return decodeURIComponent(s).replace(/\+/g, " ");
}
function getQueryParams() {
var query = {};
document.location.search.replace(
/\??(?:([^=]+)=([^&]*)&?)/g,
function () {
query[decode(arguments[1])] = decode(arguments[2]);
});
return query;
}
window.onload = function () {
var query = getQueryParams();
// check the checkboxes, assuming their ids are query param names
var inputs = document.getElementsByTagName("input");
for (var i = 0; i < inputs.length; i++) {
var el = inputs[i];
if (el.getAttribute("type") == "checkbox"
&& el.id in query) {
el.checked = query[el.id] == "1";
}
}
};
如果你正在使用jQuery,它会更简洁:
$(document).ready(function () {
$("input[type=checkbox]").each(function () {
this.checked = new RegExp("(\\?|&)" + this.id + "=1")
.test(document.location.search);
});
});
如果您想通过名称而不是ID来引用复选框,请将this.id
替换为this.name
。
答案 2 :(得分:1)
试试这个,请记住此代码不会处理格式错误的查询字符串。
function GetQueryStringParams()
{
var queryString = window.location.search.substring(1);
var params = queryString .split('&');
for (var i=0; i < params.length; i++)
{
var pos = params [i].indexOf('=');
if (pos > 0)
{
var key = params [i].substring(0,pos);
var val = params [i].substring(pos+1);
switch(val)
{
case "1":
document.getElementById(key).checked=true;
break;
case "0":
document.getElementById(key).checked=false;
break;
}
}
}
}
答案 3 :(得分:0)
答案 4 :(得分:0)
首先,从查询字符串中获取参数:
var params = new Object;
var query = window.location.search.substring(1);
if (query) {
var vars = query.split('&');
for (var i=0; i < vars.length; i++) {
var pair = vars[i].split('=');
params[unescape(pair[0])] = unescape(pair[1]);
}
}
然后相应地设置复选框:
if (params["i"] == 1) {
document.getElementById("checkbox_i").checked=true;
}
if (params["j"] == 1) {
document.getElementById("checkbox_j").checked=true;
}
// and so on