jquery replace用法汇总

//只替换匹配到的第一个目标

var str="Visit Microsoft! Microsoft"
document.write(str.replace(/Microsoft/,"W3School"))

结果：Visit W3School! Microsoft

//全局搜索（替换所有匹配到的目标）

var str="Welcome to Microsoft! ";
str=str + "We are proud to announce that Microsoft has ";
str=str + "one of the largest Web Developers sites in the world.";
document.write(str.replace(/Microsoft/g, "W3School"));

//对大小写不敏感的搜索（）

text = "JAVAScript Tutorial";
document.write(text.replace(/javascript/i, "JavaScript"));

//全局匹配并且忽略大小写

text.replace(/javascript/ig,"JavaScript");

结果：JavaScript Tutorial

//replace() 来转换姓名的格式

name = "Doe, John";

document.write(name.replace(/(\w+)\s*, \s*(\w+)/, "$2 $1"));

结果：John Doe

// replace() 来转换引号

name = '"a", "b"';
document.write(name.replace(/"([^"]*)"/g, "'$1'"));

结果：'a', 'b'

// replace() 把单词的首字母转换为大写

name = 'aaa bbb ccc';

uw=name.replace(/\b\w+\b/g, function(word){
return word.substring(0,1).toUpperCase()+word.substring(1);}
);

结果：Aaa Bbb Ccc