Using an IF statement with a multi-select field in an OnChange Script

Question

Hi Everybody, 
 I hope someone can help me understand how to use an IF statement with a Multi-Select field in an OnChange script. 
 This basic IF statement can determine whether Blue has been selected in a Text or Selection field. 
 if (oppo_color.value == 'Blue') 
 However, it doesn't work with a Multi-Select field, which is what I really need. 
 Is there something I can do to make that work? 
 Thanks very much in advance! 
 Kevin

Chris Burke · Accepted Answer

The value of the field is an array (as multiple options can be selected). Sticking with the example of oppo_color, if we want to see if 'Blue' is included in the selected options then this will do it: 
 if(crm.fields('oppo_color').val().includes('Blue')) {

 //do whatever..

} 
 
 If we're only interested when 'Blue' has been selected exclusively then this will work: 
 
 var v = crm.fields('oppo_color').val();
if(v.length === 1 && v.includes('Blue')){

}

Sage CRM

Using an IF statement with a multi-select field in an OnChange Script

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