aoizz
JS替换字符串的占位符
String.prototype.format=function(){
if(arguments.length===0){
return String(this);
}
let reg=/(\{\d\})/;
let r=this;
while(reg.test(r)){
let index=RegExp.$1.slice(1,-1);
r = r.replace(new RegExp("\\{"+index+"\\}","g"),(index >= arguments.length)?"":arguments[index]);
}
return r;
};输出结果为
"你好,我是{0},今年{2}岁,性别为{1}，测试结束".format('恶魔','男','18')
//你好,我是恶魔,今年18岁,性别为男，测试结束
String.prototype.format=function(){
if(arguments.length===0){
return String(this);
}
let reg=/(\{\d\})/;
let r=this;
while(reg.test(r)){
let index=RegExp.$1.slice(1,-1);
r = r.replace(new RegExp("\\{"+index+"\\}","g"),(index >= arguments.length)?"":arguments[index]);
}
return r;
};输出结果为
"你好,我是{0},今年{2}岁,性别为{1}，测试结束".format('恶魔','男','18')
//你好,我是恶魔,今年18岁,性别为男，测试结束