我想这是一个使用正则表达式的多部分情况,但如何在大写字母处拆分驼峰字符串并将它们变成小写字母,然后在每个新字符串之间添加连字符?
例如:
thisString
将变成:
this-string
我想这是一个使用正则表达式的多部分情况,但如何在大写字母处拆分驼峰字符串并将它们变成小写字母,然后在每个新字符串之间添加连字符?
例如:
thisString
将变成:
this-string
尝试类似以下的内容:
var myStr = 'thisString';
myStr = myStr.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
'thisIsATest'.replace(/([a-zA-Z])(?=[A-Z])/g, '$1-').toLowerCase(); // this-is-a-test
var token = document.getElementsByTagName('strong')[0].innerHTML,
replaced = token.replace(/[a-z][A-Z]/g, function(str, offset) {
return str[0] + '-' + str[1].toLowerCase();
});
alert(replaced);
例子 - http://jsfiddle.net/7DV6A/2/
replace
函数的文档:
https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/String/replace
function camelCaseToDash(input){
// replace Capital letter with the letter + a dash: '-', then lowercase everything.
return input.replace(/([A-Z])/g, '-$1').toLowerCase();
}
//or, using a callback function, directly lowercasing.
function camelCaseToDashCallback(input){
//replace capital letter with lowercase variant + a dash '-'.
return input.replace(/([A-Z])/g, (x)=> "-"+ x.toLowerCase());
}
通常情况下,选项1更快,链接为:https://jsfiddle.net/4557z/17/
String.prototype.camelCaseToDashed = function(){
return this.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
}
// Usage
"SomeVariable".camelCaseToDashed();
this-String
吗? - David Titarenco