Comparing two textboxes javascript

I am trying to create a diagram with "plotly" that will show the number of times there is an occurrence of user specified letters in a string textbox, only if the letters are in the second input word textbox. See picture below.

My code so far compute and display the number of times each letter are in the input string textbox appears without verifying if the letters are in the input word textbox. What should I do if I only want the letters in the input string textbox shown in the diagram?

 function take(){ word=document.getElementById("inputword").value; sentence=document.getElementById("inputstring").value; var x = sentence.split(""); //Takes user sentence and splits every word. var histElements = { x: x, type: 'histogram', marker: {color: '#FFC300',}, }; var layout = { bargap: 0.05, bargroupgap: 0.5, barmode: "overlay", title: "Histogram", xaxis: {title: "Values",}, yaxis: {title: "Count"}, }; var data = [histElements]; //Using ID for div to plot the graph Plotly.newPlot('myDiv', data, layout); } 

Input String:aabmnccpddxdodeezffby Input Word: badcef Plot Histogram Histogranm