javascript check for array length





If (typeof imagearray ! undefined imagearray.length > 0) // the array is defined and has at least one element . Your problem may be happening due to a mix of implicit global variables and variable hoisting. Make sure you use var whenever declaring a variable Youre getting the missing error because of the "If" typo that the other commenters pointed out. The JS parser thinks that If() is function call and is immediately followed by . Websites related to javascript checking array length. Posted on November 9, 2017.So I know that array.size() is a function while array.length is a property. Is there a usecase for using one over the other? It will always alert me "errors leeg", even if the array is empty, checked with console.log(error):