check string contains space jquery code example

Example 1: if word contains space detects using jquery

What you have will find a space anywhere in the string, not just between words.

If you want to find any kind of whitespace, you can use this, which uses a regular expression:

if (/\s/.test(str)) {
    // It has any kind of whitespace
}

\s means "any whitespace character" (spaces, tabs, vertical tabs, formfeeds, line breaks, etc.), and will find that character anywhere in the string.

Example 2: space in string using if in jquery

if(key.indexOf(' ') >= 0){
  alert();
}