Display line numbers in vim. If a file is open with vim press ESC (if you are in insert mode) and then press colon (:) and type:

set number

The above command will print line numbers in front of each line.

Now if you want to hide line numbers you just need to press colon again and type:

set nonumber

#vim #tricks #line_number #nonumber #number

How to get only numbers in textbox using jQuery?

// Restricts input for each element in the set of matched elements to the given inputFilter.
 (function($) {
     $.fn.inputFilter = function(inputFilter) {
     return this.on("input keydown keyup mousedown mouseup select contextmenu drop", function() {
         if (inputFilter(this.value)) {
         this.oldValue = this.value;
         this.oldSelectionStart = this.selectionStart;
         this.oldSelectionEnd = this.selectionEnd;
         } else if (this.hasOwnProperty("oldValue")) {
         this.value = this.oldValue;
         this.setSelectionRange(this.oldSelectionStart, this.oldSelectionEnd);
         }
     });
     };
 }(jQuery));

 // restrict input to receive just numbers
 $("#my_input_num").inputFilter(function(value) {
     return /^\d*$/.test(value);
 });

#javascript #jquery #input #number