1、为元素添加on方法
Element.prototype.on = Element.prototype.addEventListener;
NodeList.prototype.on = function (event, fn) {、
[]['forEach'].call(this, function (el) {
el.on(event, fn);
});
return this;
};
2、为元素添加trigger方法
Element.prototype.trigger = function(type, data) {
var event = document.createEvent("HTMLEvents");
event.initEvent(type, true, true);
event.data = data || {};
event.eventName = type;
event.target = this;
this.dispatchEvent(event);
return this;
};
NodeList.prototype.trigger = function(event) {
[]["forEach"].call(this, function(el) {
el["trigger"](event);
});
return this;
};
3、转义html标签
function HtmlEncode(text) {
return text
.replace(/&/g, "&")
.replace(/\"/g, '"')
.replace(//g, ">");
}
4、HTML标签转义
// HTML 标签转义
// @param {Array.} templateData 字符串类型的tokens
// @param {...} ..vals 表达式占位符的运算结果tokens
//
function SaferHTML(templateData) {
var s = templateData[0];
for (var i = 1; i < arguments.length; i++) {
var arg = String(arguments[i]);
// Escape special characters in the substitution.
s += arg
.replace(/&/g, "&")
.replace(//g, ">");
// Don't escape special characters in the template.
s += templateData[i];
}
return s;
}
// 调用
var html = SaferHTML`这是关于字符串模板的介绍
`;
5、跨浏览器绑定事件
function addEventSamp(obj, evt, fn) {
if (!oTarget) {
return;
}
if (obj.addEventListener) {
obj.addEventListener(evt, fn, false);
} else if (obj.attachEvent) {
obj.attachEvent("on" + evt, fn);
} else {
oTarget["on" + sEvtType] = fn;
}
}
6、加入收藏夹
function addFavorite(sURL, sTitle) {
try {
window.external.addFavorite(sURL, sTitle);
} catch (e) {
try {
window.sidebar.addPanel(sTitle, sURL, "");
} catch (e) {
alert("加入收藏失败，请使用Ctrl+D进行添加");
}
}
}
7、提取页面代码中所有网址
var aa = document.documentElement.outerHTML
.match(
/(url\(|src=|href=)[\"\']*([^\"\'\(\)\<\>\[\] ]+)[\"\'\)]*|(http:\/\/[\w\-\.]+[^\"\'\(\)\<\>\[\] ]+)/gi
)
.join("\r\n")
.replace(/^(src=|href=|url\()[\"\']*|[\"\'\>\) ]*$/gim, "");
alert(aa);
8、动态加载脚本文件
function appendscript(src, text, reload, charset) {
var id = hash(src + text);
if (!reload && in_array(id, evalscripts)) return;
if (reload && $(id)) {
$(id).parentNode.removeChild($(id));
}
evalscripts.push(id);
var scriptNode = document.createElement("script");
scriptNode.type = "text/javascript";
scriptNode.id = id;
scriptNode.charset = charset
? charset
: BROWSER.firefox
? document.characterSet
: document.charset;
try {
if (src) {
scriptNode.src = src;
scriptNode.onloadDone = false;
scriptNode.onload = function() {
scriptNode.onloadDone = true;
JSLOADED[src] = 1;
};
scriptNode.onreadystatechange = function() {
if (
(scriptNode.readyState == "loaded" ||
scriptNode.readyState == "complete") &&
!scriptNode.onloadDone
) {
scriptNode.onloadDone = true;
JSLOADED[src] = 1;
}
};
} else if (text) {
scriptNode.text = text;
}
document.getElementsByTagName("head")[0].appendChild(scriptNode);
} catch (e) {}
}
9、返回顶部的通用方法
function backTop(btnId) {
var btn = document.getElementById(btnId);
var d = document.documentElement;
var b = document.body;
window.onscroll = set;
btn.style.display = "none";
btn.onclick = function() {
btn.style.display = "none";
window.onscroll = null;
this.timer = setInterval(function() {
d.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
b.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
if (d.scrollTop + b.scrollTop == 0)
clearInterval(btn.timer, (window.onscroll = set));
}, 10);
};
function set() {
btn.style.display = d.scrollTop + b.scrollTop > 100 ? "block" : "none";
}
}
backTop("goTop");
10、实现base64解码
function base64_decode(data) {
var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
var o1,
o2,
o3,
h1,
h2,
h3,
h4,
bits,
i = 0,
ac = 0,
dec = "",
tmp_arr = [];
if (!data) {
return data;
}
data += "";
do {
h1 = b64.indexOf(data.charAt(i++));
h2 = b64.indexOf(data.charAt(i++));
h3 = b64.indexOf(data.charAt(i++));
h4 = b64.indexOf(data.charAt(i++));
bits = (h1 << 18) | (h2 << 12) | (h3 << 6) | h4;
o1 = (bits >> 16) & 0xff;
o2 = (bits >> 8) & 0xff;
o3 = bits & 0xff;
if (h3 == 64) {
tmp_arr[ac++] = String.fromCharCode(o1);
} else if (h4 == 64) {
tmp_arr[ac++] = String.fromCharCode(o1, o2);
} else {
tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
}
} while (i < data.length);
dec = tmp_arr.join("");
dec = utf8_decode(dec);
return dec;
}
11、确认是否是键盘有效输入值
function checkKey(iKey) {
if (iKey == 32 || iKey == 229) {
return true;
} /*空格和异常*/
if (iKey > 47 && iKey < 58) {
return true;
} /*数字*/
if (iKey > 64 && iKey < 91) {
return true;
} /*字母*/
if (iKey > 95 && iKey < 108) {
return true;
} /*数字键盘1*/
if (iKey > 108 && iKey < 112) {
return true;
} /*数字键盘2*/
if (iKey > 185 && iKey < 193) {
return true;
} /*符号1*/
if (iKey > 218 && iKey < 223) {
return true;
} /*符号2*/
return false;
}
12、全角半角转换
//iCase: 0全到半，1半到全，其他不转化
function chgCase(sStr, iCase) {
if (
typeof sStr != "string" ||
sStr.length <= 0 ||
!(iCase === 0 || iCase == 1)
) {
return sStr;
}
var i,
oRs = [],
iCode;
if (iCase) {
/*半->全*/
for (i = 0; i < sStr.length; i += 1) {
iCode = sStr.charCodeAt(i);
if (iCode == 32) {
iCode = 12288;
} else if (iCode < 127) {
iCode += 65248;
}
oRs.push(String.fromCharCode(iCode));
}
} else {
/*全->半*/
for (i = 0; i < sStr.length; i += 1) {
iCode = sStr.charCodeAt(i);
if (iCode == 12288) {
iCode = 32;
} else if (iCode > 65280 && iCode < 65375) {
iCode -= 65248;
}
oRs.push(String.fromCharCode(iCode));
}
}
return oRs.join("");
}
13、压缩CSS样式代码
function compressCss(s) {
//压缩代码
s = s.replace(/\/\*(.|\n)*?\*\//g, ""); //删除注释
s = s.replace(/\s*([\{\}\:\;\,])\s*/g, "$1");
s = s.replace(/\,[\s\.\#\d]*\{/g, "{"); //容错处理
s = s.replace(/;\s*;/g, ";"); //清除连续分号
s = s.match(/^\s*(\S+(\s+\S+)*)\s*$/); //去掉首尾空白
return s == null ? "" : s[1];
}
14、获取当前路径
var currentPageUrl = "";
if (typeof this.href === "undefined") {
currentPageUrl = document.location.toString().toLowerCase();
} else {
currentPageUrl = this.href.toString().toLowerCase();
}
15、字符串长度截取
function cutstr(str, len) {
var temp,
icount = 0,
patrn = /[^\x00-\xff]/，
strre = "";
for (var i = 0; i < str.length; i++) {
if (icount < len - 1) {
temp = str.substr(i, 1);
if (patrn.exec(temp) == null) {
icount = icount + 1
} else {
icount = icount + 2
}
strre += temp
} else {
break;
}
}
return strre + "..."
}
16、时间日期格式转换
Date.prototype.format = function(formatStr) {
var str = formatStr;
var Week = ["日", "一", "二", "三", "四", "五", "六"];
str = str.replace(/yyyy|YYYY/, this.getFullYear());
str = str.replace(
/yy|YY/,
this.getYear() % 100 > 9
? (this.getYear() % 100).toString()
: "0" + (this.getYear() % 100)
);
str = str.replace(
/MM/,
this.getMonth() + 1 > 9
? (this.getMonth() + 1).toString()
: "0" + (this.getMonth() + 1)
);
str = str.replace(/M/g, this.getMonth() + 1);
str = str.replace(/w|W/g, Week[this.getDay()]);
str = str.replace(
/dd|DD/,
this.getDate() > 9 ? this.getDate().toString() : "0" + this.getDate()
);
str = str.replace(/d|D/g, this.getDate());
str = str.replace(
/hh|HH/,
this.getHours() > 9 ? this.getHours().toString() : "0" + this.getHours()
);
str = str.replace(/h|H/g, this.getHours());
str = str.replace(
/mm/,
this.getMinutes() > 9
? this.getMinutes().toString()
: "0" + this.getMinutes()
);
str = str.replace(/m/g, this.getMinutes());
str = str.replace(
/ss|SS/,
this.getSeconds() > 9
? this.getSeconds().toString()
: "0" + this.getSeconds()
);
str = str.replace(/s|S/g, this.getSeconds());
return str;
};
// 或
Date.prototype.format = function(format) {
var o = {
"M+": this.getMonth() + 1, //month
"d+": this.getDate(), //day
"h+": this.getHours(), //hour
"m+": this.getMinutes(), //minute
"s+": this.getSeconds(), //second
"q+": Math.floor((this.getMonth() + 3) / 3), //quarter
S: this.getMilliseconds() //millisecond
};
if (/(y+)/.test(format))
format = format.replace(
RegExp.$1,
(this.getFullYear() + "").substr(4 - RegExp.$1.length)
);
for (var k in o) {
if (new RegExp("(" + k + ")").test(format))
format = format.replace(
RegExp.$1,
RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length)
);
}
return format;
};
alert(new Date().format("yyyy-MM-dd hh:mm:ss"));
17、跨浏览器删除事件
function delEvt(obj, evt, fn) {
if (!obj) {
return;
}
if (obj.addEventListener) {
obj.addEventListener(evt, fn, false);
} else if (oTarget.attachEvent) {
obj.attachEvent("on" + evt, fn);
} else {
obj["on" + evt] = fn;
}
}
18、判断是否以某个字符串结束
String.prototype.endWith = function(s) {
var d = this.length - s.length;
return d >= 0 && this.lastIndexOf(s) == d;
};
19、返回脚本内容
function evalscript(s) {
if (s.indexOf("]*?>([^\x00]*?)<\/script>/gi;
var arr = [];
while ((arr = p.exec(s))) {
var p1 = /]*?src=\"([^\>]*?)\"[^\>]*?(reload=\"1\")?(?:charset=\"([\w\-]+?)\")?><\/script>/i;
var arr1 = [];
arr1 = p1.exec(arr[0]);
if (arr1) {
appendscript(arr1[1], "", arr1[2], arr1[3]);
} else {
p1 = /([^\x00]+?)<\/script>/i;
arr1 = p1.exec(arr[0]);
appendscript("", arr1[2], arr1[1].indexOf("reload=") != -1);
}
}
return s;
}
20、格式化CSS样式代码
function formatCss(s) {
//格式化代码
s = s.replace(/\s*([\{\}\:\;\,])\s*/g, "$1");
s = s.replace(/;\s*;/g, ";"); //清除连续分号
s = s.replace(/\,[\s\.\#\d]*{/g, "{");
s = s.replace(/([^\s])\{([^\s])/g, "$1 {\n\t$2");
s = s.replace(/([^\s])\}([^\n]*)/g, "$1\n}\n$2");
s = s.replace(/([^\s]);([^\s\}])/g, "$1;\n\t$2");
return s;
}
21、获取cookie值
function getCookie(name) {
var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));
if (arr != null) return unescape(arr[2]);
return null;
}
22、获得URL中GET参数值
// 用法：如果地址是 test.htm?t1=1&t2=2&t3=3, 那么能取得：GET["t1"], GET["t2"], GET["t3"]
function getGet() {
querystr = window.location.href.split("?");
if (querystr[1]) {
GETs = querystr[1].split("&");
GET = [];
for (i = 0; i < GETs.length; i++) {
tmp_arr = GETs.split("=");
key = tmp_arr[0];
GET[key] = tmp_arr[1];
}
}
return querystr[1];
}
23、获取移动设备初始化大小
function getInitZoom() {
if (!this._initZoom) {
var screenWidth = Math.min(screen.height, screen.width);
if (this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()) {
screenWidth = screenWidth / window.devicePixelRatio;
}
this._initZoom = screenWidth / document.body.offsetWidth;
}
return this._initZoom;
}
24、获取页面高度
function getPageHeight() {
var g = document,
a = g.body,
f = g.documentElement,
d = g.compatMode == "BackCompat" ? a : g.documentElement;
return Math.max(f.scrollHeight, a.scrollHeight, d.clientHeight);
}
25、获取页面scrollLeft
function getPageScrollLeft() {
return document.documentElement.scrollLeft || document.body.scrollLeft;
}
26、获取页面可视高度
function getPageViewHeight() {
var d = document,
a = d.compatMode == "BackCompat" ? d.body : d.documentElement;
return a.clientHeight;
}
27、获取页面宽度
function getPageWidth() {
var g = document,
a = g.body,
f = g.documentElement,
d = g.compatMode == "BackCompat" ? a : g.documentElement;
return Math.max(f.scrollWidth, a.scrollWidth, d.clientWidth);
}
28、获取移动设备屏幕宽度
function getScreenWidth() {
var smallerSide = Math.min(screen.width, screen.height);
var fixViewPortsExperiment =
rendererModel.runningExperiments.FixViewport ||
rendererModel.runningExperiments.fixviewport;
var fixViewPortsExperimentRunning =
fixViewPortsExperiment && fixViewPortsExperiment.toLowerCase() === "new";
if (fixViewPortsExperiment) {
if (this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()) {
smallerSide = smallerSide / window.devicePixelRatio;
}
}
return smallerSide;
}
29、获取网页被卷去的位置
function getScrollXY() {
return document.body.scrollTop
? {
x: document.body.scrollLeft,
y: document.body.scrollTop
}
: {
x: document.documentElement.scrollLeft,
y: document.documentElement.scrollTop
};
}
30、获取URL上的参数
// 获取URL中的某参数值,不区分大小写
// 获取URL中的某参数值,不区分大小写,
// 默认是取'hash'里的参数，
// 如果传其他参数支持取‘search’中的参数
// @param {String} name 参数名称
export function getUrlParam(name, type = "hash") {
let newName = name,
reg = new RegExp("(^|&)" + newName + "=([^&]*)(&|$)", "i"),
paramHash = window.location.hash.split("?")[1] || "",
paramSearch = window.location.search.split("?")[1] || "",
param;
type === "hash" ? (param = paramHash) : (param = paramSearch);
let result = param.match(reg);
if (result != null) {
return result[2].split("/")[0];
}
return null;
}
31、检验URL链接是否有效
function getUrlState(URL) {
var xmlhttp = new ActiveXObject("microsoft.xmlhttp");
xmlhttp.Open("GET", URL, false);
try {
xmlhttp.Send();
} catch (e) {
} finally {
var result = xmlhttp.responseText;
if (result) {
if (xmlhttp.Status == 200) {
return true;
} else {
return false;
}
} else {
return false;
}
}
}
32、判断是否安卓移动设备访问
function isAndroidMobileDevice() {
return /android/i.test(navigator.userAgent.toLowerCase());
}
33、判断是否苹果移动设备访问
function isAppleMobileDevice() {
return /iphone|ipod|ipad|Macintosh/i.test(navigator.userAgent.toLowerCase());
}
34、判断是否为数字类型
function isDigit(value) {
var patrn = /^[0-9]*$/;
if (patrn.exec(value) == null || value == "") {
return false;
} else {
return true;
}
}
35、判断是否手机号码
function isMobileNumber(e) {
var i =
"134,135,136,137,138,139,150,151,152,157,158,159,187,188,147,182,183,184,178",
n = "130,131,132,155,156,185,186,145,176",
a = "133,153,180,181,189,177,173,170",
o = e || "",
r = o.substring(0, 3),
d = o.substring(0, 4),
s =
!!/^1\d{10}$/.test(o) &&
(n.indexOf(r) >= 0
? "联通"
: a.indexOf(r) >= 0
? "电信"
: "1349" == d
? "电信"
: i.indexOf(r) >= 0
? "移动"
: "未知");
return s;
}
36、打开一个窗体通用方法
function openWindow(url, windowName, width, height) {
var x = parseInt(screen.width / 2.0) - width / 2.0;
var y = parseInt(screen.height / 2.0) - height / 2.0;
var isMSIE = navigator.appName == "Microsoft Internet Explorer";
if (isMSIE) {
var p = "resizable=1,location=no,scrollbars=no,width=";
p = p + width;
p = p + ",height=";
p = p + height;
p = p + ",left=";
p = p + x;
p = p + ",top=";
p = p + y;
retval = window.open(url, windowName, p);
} else {
var win = window.open(
url,
"ZyiisPopup",
"top=" +
y +
",left=" +
x +
",scrollbars=" +
scrollbars +
",dialog=yes,modal=yes,width=" +
width +
",height=" +
height +
",resizable=no"
);
eval("try { win.resizeTo(width, height); } catch(e) { }");
win.focus();
}
}
37、设置cookie值
function setCookie(name, value, Hours) {
var d = new Date();
var offset = 8;
var utc = d.getTime() + d.getTimezoneOffset() * 60000;
var nd = utc + 3600000 * offset;
var exp = new Date(nd);
exp.setTime(exp.getTime() + Hours * 60 * 60 * 1000);
document.cookie =
name +
"=" +
escape(value) +
";path=/;expires=" +
exp.toGMTString() +
";domain=360doc.com;";
}
38、清除脚本内容
function stripscript(s) {
return s.replace(/.*?<\/script>/gi, "");
}
39、时间个性化输出功能
/*
1、< 60s, 显示为“刚刚”
2、>= 1min && < 60 min, 显示与当前时间差“XX分钟前”
3、>= 60min && < 1day, 显示与当前时间差“今天 XX:XX”
4、>= 1day && < 1year, 显示日期“XX月XX日 XX:XX”
5、>= 1year, 显示具体日期“XXXX年XX月XX日 XX:XX”
*/
function timeFormat(time) {
var date = new Date(time),
curDate = new Date(),
year = date.getFullYear(),
month = date.getMonth() + 10,
day = date.getDate(),
hour = date.getHours(),
minute = date.getMinutes(),
curYear = curDate.getFullYear(),
curHour = curDate.getHours(),
timeStr;
if (year < curYear) {
timeStr = year + "年" + month + "月" + day + "日 " + hour + ":" + minute;
} else {
var pastTime = curDate - date,
pastH = pastTime / 3600000;
if (pastH > curHour) {
timeStr = month + "月" + day + "日 " + hour + ":" + minute;
} else if (pastH >= 1) {
timeStr = "今天 " + hour + ":" + minute + "分";
} else {
var pastM = curDate.getMinutes() - minute;
if (pastM > 1) {
timeStr = pastM + "分钟前";
} else {
timeStr = "刚刚";
}
}
}
return timeStr;
}
40、金额大写转换函数
function transform(tranvalue) {
try {
var i = 1;
var dw2 = new Array("", "万", "亿"); //大单位
var dw1 = new Array("拾", "佰", "仟"); //小单位
var dw = new Array(
"零",
"壹",
"贰",
"叁",
"肆",
"伍",
"陆",
"柒",
"捌",
"玖"
);
//整数部分用
//以下是小写转换成大写显示在合计大写的文本框中
//分离整数与小数
var source = splits(tranvalue);
var num = source[0];
var dig = source[1];
//转换整数部分
var k1 = 0; //计小单位
var k2 = 0; //计大单位
var sum = 0;
var str = "";
var len = source[0].length; //整数的长度
for (i = 1; i <= len; i++) {
var n = source[0].charAt(len - i); //取得某个位数上的数字
var bn = 0;
if (len - i - 1 >= 0) {
bn = source[0].charAt(len - i - 1); //取得某个位数前一位上的数字
}
sum = sum + Number(n);
if (sum != 0) {
str = dw[Number(n)].concat(str); //取得该数字对应的大写数字，并插入到str字符串的前面
if (n == "0") sum = 0;
}
if (len - i - 1 >= 0) {
//在数字范围内
if (k1 != 3) {
//加小单位
if (bn != 0) {
str = dw1[k1].concat(str);
}
k1++;
} else {
//不加小单位，加大单位
k1 = 0;
var temp = str.charAt(0);
if (temp == "万" || temp == "亿")
//若大单位前没有数字则舍去大单位
str = str.substr(1, str.length - 1);
str = dw2[k2].concat(str);
sum = 0;
}
}
if (k1 == 3) {
//小单位到千则大单位进一
k2++;
}
}
//转换小数部分
var strdig = "";
if (dig != "") {
var n = dig.charAt(0);
if (n != 0) {
strdig += dw[Number(n)] + "角"; //加数字
}
var n = dig.charAt(1);
if (n != 0) {
strdig += dw[Number(n)] + "分"; //加数字
}
}
str += "元" + strdig;
} catch (e) {
return "0元";
}
return str;
}
//拆分整数与小数
function splits(tranvalue) {
var value = new Array("", "");
temp = tranvalue.split(".");
for (var i = 0; i < temp.length; i++) {
value = temp;
}
return value;
}
41、清除空格
String.prototype.trim = function() {
var reExtraSpace = /^\s*(.*?)\s+$/;
return this.replace(reExtraSpace, "$1");
};
// 清除左空格
function ltrim(s) {
return s.replace(/^(\s*| *)/, "");
}
// 清除右空格
function rtrim(s) {
return s.replace(/(\s*| *)$/, "");
}
42、随机数时间戳
function uniqueId() {
var a = Math.random,
b = parseInt;
return (
Number(new Date()).toString() + b(10 * a()) + b(10 * a()) + b(10 * a())
);
}
43、实现utf8解码
function utf8_decode(str_data) {
var tmp_arr = [],
i = 0,
ac = 0,
c1 = 0,
c2 = 0,
c3 = 0;
str_data += "";
while (i < str_data.length) {
c1 = str_data.charCodeAt(i);
if (c1 < 128) {
tmp_arr[ac++] = String.fromCharCode(c1);
i++;
} else if (c1 > 191 && c1 < 224) {
c2 = str_data.charCodeAt(i + 1);
tmp_arr[ac++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));
i += 2;
} else {
c2 = str_data.charCodeAt(i + 1);
c3 = str_data.charCodeAt(i + 2);
tmp_arr[ac++] = String.fromCharCode(
((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63)
);
i += 3;
}
}
return tmp_arr.join("");
}
44、校验是否为一个数字，以及该数字小数点位数是否与参数floats一致
校验规则：
若参数floats有值，则校验该数字小数点后的位数。
若参数floats没有值，则仅仅校验是否为数字。
function isNum(value,floats=null){
let regexp = new RegExp(`^[1-9][0-9]*.[0-9]{${floats}}$|^0.[0-9]{${floats}}$`);
return typeof value === 'number' && floats?regexp.test(String(value)):true;
}
45、校验是否为非零的正整数
function isInt(value,minLength=null,maxLength=undefined){
if(!isNum(value)) return false;
let regexp = new RegExp(`^-?[1-9][0-9]${anysicIntLength(minLength,maxLength)}$`);
return regexp.test(value.toString());
}
46、校验是否为邮箱地址
function isEmail(str) {
return /^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$/.test(str);
}
47、校验是否为QQ号码
校验规则：非0开头的5位-13位整数
function isQQ(value) {
return /^[1-9][0-9]{4,12}$/.test(value.toString());
}
48、校验是否为不含端口号的IP地址
校验规则：
IP格式为xxx.xxx.xxx.xxx，每一项数字取值范围为0-255
除0以外其他数字不能以0开头，比如02
function isIP(str) {
return /^((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])\.){3}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])$/.test(str);
}
49、校验是否为IPv6地址
校验规则：
支持IPv6正常格式
支持IPv6压缩格式
function isIPv6(str){
return Boolean(str.match(/:/g)?str.match(/:/g).length<=7:false && /::/.test(str)?/^([\da-f]{1,4}(:|::)){1,6}[\da-f]{1,4}$/i.test(str):/^([\da-f]{1,4}:){7}[\da-f]{1,4}$/i.test(str));
}
50、校验是否为中国大陆第二代居民身份证
校验规则：
共18位，最后一位可为X(大小写均可)
不能以0开头
出生年月日会进行校验：年份只能为18/19/2*开头，月份只能为01-12，日只能为01-31
function isIDCard(str){
return /^[1-9][0-9]{5}(18|19|(2[0-9]))[0-9]{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)[0-9]{3}[0-9Xx]$/.test(str);
}
51、校验两个参数是否完全相同，包括类型
校验规则：
值相同，数据类型也相同
function same(firstValue,secondValue){
return firstValue===secondValue;
}
52、校验字符的长度是否在规定的范围内
校验规则：
minInt为在取值范围中最小的长度
maxInt为在取值范围中最大的长度
function lengthRange(str,minLength,maxLength=9007199254740991) {
return Boolean(str.length >= minLength && str.length <= maxLength);
}
53、返回字符串构成种类(字母，数字，标点符号)的数量
LIP缩写的由来：L(letter 字母) + I(uint 数字) + P(punctuation 标点符号)
参数punctuation的说明：punctuation指可接受的标点符号集
若需自定义符号集，例如“仅包含中划线和下划线”，将参数设置为"-"即可
若不传值或默认为null，则内部默认标点符号集为除空格外的其他英文标点符号：~`!@#$%^&*()-+=[]{};:"',<.>/?
function getLIPTypes(str,punctuation=null){
let p_regexp = new RegExp('['+getPunctuation(punctuation)+']');
return /[A-z]/.test(str) + /[0-9]/.test(str) + p_regexp.test(str);
}
54、校验字符串构成的种类数量是否大于或等于参数num的值。通常用来校验用户设置的密码复杂程度。
校验规则：
参数num为需要构成的种类(字母、数字、标点符号)，该值只能是1-3。
默认参数num的值为1，即表示：至少包含字母，数字，标点符号中的1种
若参数num的值为2，即表示：至少包含字母，数字，标点符号中的2种
若参数num的值为3，即表示：必须同时包含字母，数字，标点符号
参数punctuation指可接受的标点符号集，具体设定可参考getLIPTypes()方法中关于标点符号集的解释。
function pureLIP(str,num=1,punctuation=null){
let regexp = new RegExp(`[^A-z0-9|${getPunctuation(punctuation)}]`);
return Boolean(!regexp.test(str) && getLIPTypes(str,punctuation)>= num);
}
55、清除所有中文字符(包括中文标点符号)
function clearCNChars(str){
return str.replace(/[\u4e00-\u9fa5]/g,'');
}
56、除保留标点符号集以外，清除其他所有英文的标点符号(含空格)
全部英文标点符号为：~`!@#$%^&*()-+=[]{};:"',<.>/?
参数excludePunctuation指需要保留的标点符号集，例如若传递的值为''，即表示清除_以外的其他所有英文标点符号。
function clearPunctuation(str,excludePunctuation=null){
let regexp = new RegExp(`[${getExcludePunctuation(excludePunctuation)}]`,'g');
return str.replace(regexp,'');
}
57、金钱格式化，三位加逗号
/**
* @param { number } num
*/
export const formatMoney = num => num.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
58、截取字符串并加身略号
export function subText(str, length) {
if (str.length === 0) {
return '';
}
if (str.length > length) {
return str.substr(0, length) + "...";
} else {
return str;
}
}
59、获取文件base64编码
/**
* @param file
* @param format 指定文件格式
* @param size 指定文件大小(字节)
* @param formatMsg 格式错误提示
* @param sizeMsg 大小超出限制提示
* @returns {Promise}
*/
export function fileToBase64String(file, format = ['jpg', 'jpeg', 'png', 'gif'], size = 20 * 1024 * 1024, formatMsg = '文件格式不正确', sizeMsg = '文件大小超出限制') {
return new Promise((resolve, reject) => {
// 格式过滤
let suffix = file.type.split('/')[1].toLowerCase();
let inFormat = false;
for (let i = 0; i < format.length; i++) {
if (suffix === format[i]) {
inFormat = true;
break;
}
}
if (!inFormat) {
reject(formatMsg);
}
// 大小过滤
if (file.size > size) {
reject(sizeMsg);
}
// 转base64字符串
let fileReader = new FileReader();
fileReader.readAsDataURL(file);
fileReader.onload = () => {
let res = fileReader.result;
resolve({base64String: res, suffix: suffix});
reject('异常文件，请重新选择');
}
})
}
60、B转换到KB,MB,GB并保留两位小数
/**
* @param { number } fileSize
*/
export function formatFileSize(fileSize) {
let temp;
if (fileSize < 1024) {
return fileSize + 'B';
} else if (fileSize < (1024 * 1024)) {
temp = fileSize / 1024;
temp = temp.toFixed(2);
return temp + 'KB';
} else if (fileSize < (1024 * 1024 * 1024)) {
temp = fileSize / (1024 * 1024);
temp = temp.toFixed(2);
return temp + 'MB';
} else {
temp = fileSize / (1024 * 1024 * 1024);
temp = temp.toFixed(2);
return temp + 'GB';
}
}
61、base64转file
/**
* @param { base64 } base64
* @param { string } filename 转换后的文件名
*/
export const base64ToFile = (base64, filename )=> {
let arr = base64.split(',');
let mime = arr[0].match(/:(.*?);/)[1];
let suffix = mime.split('/')[1] ;// 图片后缀
let bstr = atob(arr[1]);
let n = bstr.length;
let u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n)
}
return new File([u8arr], `${filename}.${suffix}`, { type: mime })
};
62、base64转blob
/**
* @param { base64 } base64
*/
export const base64ToBlob = base64 => {
let arr = base64.split(','),
mime = arr[0].match(/:(.*?);/)[1],
bstr = atob(arr[1]),
n = bstr.length,
u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
return new Blob([u8arr], { type: mime });
};