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baihuirongbaihuirong
committedDec 7, 2018
JS中正则表达式
1 parent 2b70c96 commit b32c33a

34 files changed

+351
-351
lines changed
 

‎JS中正则表达式/charAt.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var str='abcdef';
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alert(str.charAt(3));
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/match.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var str='asdf 34 656 cvs33';
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var re= /\d/g;
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alert(str.match(re));
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/match2.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var str='asdf 34 656 cvs33';
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var re= /\d+/g;
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alert(str.match(re));
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/replace.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var str='abc aaa erw';
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var re=/a/g;
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alert(str.replace(re,0));
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/search.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var str='abcdef';
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alert(str.search('b'));
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/split.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var str="12-56-aaa-89";
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var arr=str.split('-');
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alert(arr);
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/substring.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var str='abcdef';
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alert(str.substring(2,5));
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alert(str.substring(1));
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/找出字符串中的所有数字.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var str='12 fff 87 er3334 233 -=-=fa80';
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var arr=[];
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var tmp='';
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for(var i=0;i<str.length;i++)
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{
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if(str.charAt(i)>='0' && str.charAt(i)<='9')
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{
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tmp+=str.charAt(i);
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}
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else
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{
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if(tmp)
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{
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arr.push(tmp);
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tmp='';
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}
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}
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}
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if(tmp)
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{
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arr.push(tmp);
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tmp='';
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}
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alert(arr);
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/找出字符串中的所有数字2.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var str='12 fff 87 er3334 233 -=-=fa80';
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//alert(str.match(/\d+/g));
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alert(str.match(/[0-9]+/g));
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/敏感词过滤.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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window.onload=function()
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{
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var oTxt1=document.getElementById('txt1');
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var oTxt2=document.getElementById('txt2');
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var oBtn=document.getElementById('btn1');
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oBtn.onclick=function()
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{
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var re=/北京|百度|淘宝/g;
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oTxt2.value=oTxt1.value.replace(re,'****');
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}
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}
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</script>
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</head>
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<body>
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<textarea id="txt1" rows="10" cols="40"></textarea><br>
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<input id="btn1" type="button" value="过滤" /><br>
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<textarea id="txt2" rows="10" cols="40"></textarea>
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</body>
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</html>

‎JS中正则表达式/方括号.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var str='apc xpc ppc bpc spc tpc';
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var re=/[apx]pc/g;
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alert(str.match(re));
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/校验邮箱.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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window.onload=function()
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{
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var oTxt=document.getElementById('txt1');
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var oBtn=document.getElementById('btn1');
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oBtn.onclick=function()
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{
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var re=/^\w+@[a-z0-9]+\.[a-z]+$/i;
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if(re.test(oTxt.value))
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{
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alert('合法的邮箱');
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}
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else{
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alert('你丫写错了');
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}
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}
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}
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</script>
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</head>
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<body>
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<input type="text" id="txt1"/>
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<input type="button" value="校验" id="btn1"/>
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</body>
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</html>

‎JS中正则表达式/正则.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var str='adsf 43 23 vcxzxcv';
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var re=/\d/;
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alert(str.search(re));
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/第一个正则表达式.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var re=new RegExp('a','i');
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var str='Abcdef';
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alert(str.search(re));
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/第一个正则表达式2.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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var re=/a/i;//i,忽略大小写
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var str='Abcdef';
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alert(str.search(re));
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</script>
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</head>
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<body>
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</body>
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</html>

‎JS中正则表达式/过滤html标签.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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<script>
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window.onload=function()
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{
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var oTxt1=document.getElementById('txt1');
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var oTxt2=document.getElementById('txt2');
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var oBtn=document.getElementById('btn1');
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oBtn.onclick=function()
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{
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var re=/<[^<>]/g;
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oTxt2.value=oTxt1.value.replace(re,'');
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}
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}
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</script>
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</head>
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<body>
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<textarea id="txt1" rows="10" cols="40"></textarea><br>
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<input id="btn1" type="button" value="转换" /><br>
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<textarea id="txt2" rows="10" cols="40"></textarea>
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</body>
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</html>

‎JavaScript系列视频资料/智能社视频材料 - JS中的正则表达式/记录/charAt.html

-15
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