在“：”之前将某些文本更改为大写

Question

I have a multiline of string, at the end of the line I have ':'. now I want to change the word of the whole line before ':' to upper case. how can I change this?

var temp= "Professional Endermologie Lipomassage Total Care at £65 (35 minutes)
Professional Endermologie LPG Cellulite Smoothing Treatment at £65 (35 minutes)
Professional Inch Loss Wrap at £80 (2 hours)
Thalgo Polynesia Spa Ritual at £120 (1.30 hours)
Laser Hair removal:";


var rsdata = temp.substring(0, temp.indexOf(":"));
var rsdata = temp.split(':')[0];
data = temp.replace(rsdata, rsdata.toUpperCase());
console.log(data);

Here the sample code i have use to change the particular text.

Answer 1

Simple example, using Template Literals for multi-line string:

var text = `Line 1
Line 2
Line 3
Line 4 with colon: after colon`;

text = text.replace(/.+?:/, function(match) {
    return match.toUpperCase();
});

console.log(text);