JavaScript常用方法汇总
/* JS 替换非法字符主要用在密码验证上出现的.特殊字符 */
function URLencode(sStr) {
return escape(sStr).replace(/\+/g, '%2B').replace(/\"/g, '%22').replace(/\'/g, '%27').replace(/\//g, '%2F');
};
/* 按Ctrl + Entert 直接提交表单 */
document.body.onkeydown = function (evt) {
evt = evt ? evt : (window.event ? window.event : null);
if (13 == evt.keyCode && evt.ctrlKey) {
evt.returnValue = false;
evt.cancel = true;
PostData();
}
};
/* 获取当前时间 */
function GetCurrentDate() {
var d = new Date();
var y = d.getYear()+1900;
month = add_zero(d.getMonth() + 1),
days = add_zero(d.getDate()),
hours = add_zero(d.getHours());
minutes = add_zero(d.getMinutes()),
seconds = add_zero(d.getSeconds());
var str = y + '-' + month + '-' + days + ' ' + hours + ':' + minutes + ':' + seconds;
return str;
};
function add_zero(temp) {
if (temp < 10) return "0" + temp;
else return temp;
}
/* Js 去掉空格方法： */
String.prototype.Trim = function()
{ return this.replace(/(^\s*)|(\s*$)/g, ""); }
String.prototype.LTrim = function()
{return this.replace(/(^\s*)/g, "");}
String.prototype.RTrim = function()
{return this.replace(/(\s*$)/g, "");}
/* js 动态移除 head 里的 js 引用 */
this.ClearHeadJs = function (src) {
var js = document.getElementsByTagName('head')[0].children;
var obj = null;
for (var i = 0; i < js.length; i++) {
if (js[i].tagName.toLowerCase() == "script" && js[i].attributes['src'].value.indexOf(src) > 0) {
obj = js[i];
}
}
document.getElementsByTagName('head')[0].removeChild(obj);
};
/* 整个UL 点击事件 加在UL里的onclick里 */
function CreateFrom(url, params) {
var f = document.createElement("form");
f.setAttribute("action", url);
for (var i = 0; i < params.length; i++) {
var input = document.createElement("input");
input.setAttribute("type", "hidden");
input.setAttribute("name", params[i].paramName);
input.setAttribute("value", params[i].paramValue);
f.appendChild(input);
}
f.target = "_blank";
document.body.appendChild(f);
f.submit();
};
/* 判断浏览器使用的是哪个 JS 版本 */
<script language="javascript">
var jsversion = 1.0;
</script>
<script language="javascript1.1">
jsversion = 1.1;
</script>
<script language="javascript1.2">
jsversion = 1.2;
</script>
<script language="javascript1.3">
jsversion = 1.3;
</script>
<script language="javascript1.4">
jsversion = 1.4;
</script>
<script language="javascript1.5">
jsversion = 1.5;
</script>
<script language="javascript1.6">
jsversion = 1.6;
</script>
<script language="javascript1.7">
jsversion = 1.7;
</script>
<script language="javascript1.8">
jsversion = 1.8;
</script>
<script language="javascript1.9">
jsversion = 1.9;
</script>
<script language="javascript2.0">
jsversion = 2.0;
</script>
alert(jsversion);
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