<script type="text/javascript" src="https://platform.linkedin.com/xdoor/scripts/in.js">
    api_key: {our API key}
    extensions: ATSIntegrationWidget@http://www.linkedin.com/recruiter/widget/ATSIntegration
</script>

<script type="IN/ATSIntegrationWidget"
    data-supported-bundled-integration-types="RECRUITER_SYSTEM_CONNECT_COMPANY,RECRUITER_SYSTEM_CONNECT_CONTRACT,APPLY_WITH_LINKEDIN,APPLY_STARTERS_EXP"
    data-onintegrate="handleIntegrations"
    data-width="500px">
</script>

<script>
    function handleIntegrations(integrations) {
        //Your code here
    }
</script>

var target = document.getElementById("integration");

var newScript = document.createElement("script");
var inlineScript = document.createTextNode("function handleIntegrations(integrations) { }");
newScript.appendChild(inlineScript);
target.appendChild(newScript);