JavaScript代码片段二
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JavaScript统计文字个数、特殊字符转义、动态插入js代码、身份证验证
统计文字个数
function wordCount(data) {
var pattern = /[a-zA-Z0-9_\u0392-\u03c9]+|[\u4E00-\u9FFF\u3400-\u4dbf\uf900-\ufaff\u3040-\u309f\uac00-\ud7af]+/g;
var m = data.match(pattern);
var count = 0;
if( m === null ) return count;
for (var i = 0; i < m.length; i++) {
if (m[i].charCodeAt(0) >= 0x4E00) {
count += m[i].length;
} else {
count += 1;
}
}
return count;
}
wordCount(‘中文内容’);//使用
特殊字符转义
function htmlspecialchars (str) {
var str = str.toString().replace(/&/g, "&").replace(/</g, "<").replace(/>/g, ">").replace(/"/g, '"');
return str;
}
动态插入js
function injectScript(src) {
var s, t;
s = document.createElement('script');
s.type = 'text/javascript';
s.async = true;
s.src = src;
t = document.getElementsByTagName('script')[0];
t.parentNode.insertBefore(s, t);
}
身份证验证
function chechCHNCardId(sNo) {
if (!this.regExpTest(sNo, /^[0-9]{17}[X0-9]$/)) {
return false;
}
sNo = sNo.toString();
var a, b, c;
a = parseInt(sNo.substr(0, 1)) * 7 + parseInt(sNo.substr(1, 1)) * 9 + parseInt(sNo.substr(2, 1)) * 10;
a = a + parseInt(sNo.substr(3, 1)) * 5 + parseInt(sNo.substr(4, 1)) * 8 + parseInt(sNo.substr(5, 1)) * 4;
a = a + parseInt(sNo.substr(6, 1)) * 2 + parseInt(sNo.substr(7, 1)) * 1 + parseInt(sNo.substr(8, 1)) * 6;
a = a + parseInt(sNo.substr(9, 1)) * 3 + parseInt(sNo.substr(10, 1)) * 7 + parseInt(sNo.substr(11, 1)) * 9;
a = a + parseInt(sNo.substr(12, 1)) * 10 + parseInt(sNo.substr(13, 1)) * 5 + parseInt(sNo.substr(14, 1)) * 8;
a = a + parseInt(sNo.substr(15, 1)) * 4 + parseInt(sNo.substr(16, 1)) * 2;
b = a % 11;
if (b == 2) {
c = sNo.substr(17, 1).toUpperCase();
} else {
c = parseInt(sNo.substr(17, 1));
}
switch (b) {
case 0:
if (c != 1) {
return false;
}
break;
case 1:
if (c != 0) {
return false;
}
break;
case 2:
if (c != "X") {
return false;
}
break;
case 3:
if (c != 9) {
return false;
}
break;
case 4:
if (c != 8) {
return false;
}
break;
case 5:
if (c != 7) {
return false;
}
break;
case 6:
if (c != 6) {
return false;
}
break;
case 7:
if (c != 5) {
return false;
}
break;
case 8:
if (c != 4) {
return false;
}
break;
case 9:
if (c != 3) {
return false;
}
break;
case 10:
if (c != 2) {
return false;
};
}
return true;
}
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