5 替换空格

1 function replaceSpace(str)
2 {
3     return str.replace(/ /g,‘%20‘);
4 }

stringObject.replace(regexp/substr,replacement)

 1 function replaceSpace(str)
 2 {
 3     let output = ‘‘;
 4     for (let i=0,len=str.length; i<len; i++) {
 5         if(str[i] == ‘ ‘) {
 6             output += ‘%20‘;
 7         }else{
 8             output += str[i];
 9         }
10     }
11     return output;
12 }